CN111511025B - Power control method and terminal equipment - Google Patents
Power control method and terminal equipment Download PDFInfo
- Publication number
- CN111511025B CN111511025B CN201910101907.XA CN201910101907A CN111511025B CN 111511025 B CN111511025 B CN 111511025B CN 201910101907 A CN201910101907 A CN 201910101907A CN 111511025 B CN111511025 B CN 111511025B
- Authority
- CN
- China
- Prior art keywords
- terminal device
- channel
- information
- feedback
- parameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR or Eb/lo
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
- H04W52/36—Transmission power control [TPC] using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
本申请提供了一种功率控制方法及终端设备,其中,该方法包括:第一终端设备确定数据信道的发射功率;其中,所述数据信道中包括第一信息,所述第一信息包括反馈信息;所述第一终端设备以所述数据信道的发射功率向第二终端设备发送所述反馈信息。相应的,本申请还提供了对应的装置。采用本申请,可合理的对功率进行控制。
The present application provides a power control method and a terminal device, wherein the method includes: the first terminal device determines the transmission power of the data channel; wherein the data channel includes first information, and the first information includes feedback information ; The first terminal device sends the feedback information to the second terminal device at the transmission power of the data channel. Correspondingly, the present application also provides a corresponding device. With this application, the power can be reasonably controlled.
Description
技术领域Technical Field
本申请涉及通信技术领域,尤其涉及一种功率控制方法及终端设备。The present application relates to the field of communication technology, and in particular to a power control method and terminal equipment.
背景技术Background Art
在第三代合作伙伴计划(the 3rd generation partnership project,3GPP)提出的长期演进(long term evolution,LTE)技术的网络下,车与任何事物通信(vehicle-to-everything,V2X)的车联网技术被提出,V2X通信是指车辆与外界的任何事物的通信,包括车与车的通信(vehicle to vehicle,V2V)、车与行人的通信(vehicle to pedestrian,V2P)、车与基础设施的通信(vehicle to infrastructure,V2I)、车与网络的通信(vehicleto network,V2N)。Under the network of long term evolution (LTE) technology proposed by the 3rd generation partnership project (3GPP), vehicle-to-everything (V2X) vehicle networking technology was proposed. V2X communication refers to the communication between a vehicle and anything in the outside world, including vehicle to vehicle (V2V), vehicle to pedestrian (V2P), vehicle to infrastructure (V2I), and vehicle to network (V2N).
V2X通信针对以车辆为代表的高速设备,是未来对通信时延要求非常高的场景下应用的基础技术和关键技术,如智能汽车、自动驾驶、智能交通运输系统等场景。基于V2X通信,车辆用户能将自身的一些信息,例如位置、速度、意图(转弯、并线、倒车)等信息周期性以及一些非周期性的事件触发的信息向周围的车辆用户发送,同样地车辆用户也可以实时接收周围用户的信息。V2X communication is aimed at high-speed equipment represented by vehicles, and is the basic technology and key technology for applications in scenarios with very high communication latency requirements in the future, such as smart cars, autonomous driving, and intelligent transportation systems. Based on V2X communication, vehicle users can send some of their own information, such as location, speed, intention (turning, merging, reversing), and other information periodically and some non-periodic event-triggered information to surrounding vehicle users. Similarly, vehicle users can also receive information from surrounding users in real time.
其中,LTE-V2X主要面对的业务类型是广播消息,没有混合自动重传请求(hybridautomatic repeat request,HARQ)反馈,以及信道状态信息(channel stateinformation,CSI)反馈等等。Among them, the main service type faced by LTE-V2X is broadcast messages, and there is no hybrid automatic repeat request (HARQ) feedback, channel state information (CSI) feedback, etc.
然而,在NR-V2X中的业务类型还可单播以及组播等等,因此,在NR-V2X中如何进行功率控制分配和功率控制亟待解决。However, the service types in NR-V2X can also be unicast and multicast, etc. Therefore, how to perform power control allocation and power control in NR-V2X needs to be solved urgently.
发明内容Summary of the invention
本申请提供了一种功率控制方法及终端设备,可合理地对不同信道的发射功率进行控制。The present application provides a power control method and terminal equipment, which can reasonably control the transmission power of different channels.
第一方面,本申请实施例提供了一种功率控制方法,包括:第一终端设备确定数据信道的发射功率;其中,所述数据信道中包括第一信息,所述第一信息包括反馈信息;所述第一终端设备以所述数据信道的发射功率向第二终端设备发送所述反馈信息。In a first aspect, an embodiment of the present application provides a power control method, comprising: a first terminal device determines the transmission power of a data channel; wherein the data channel includes first information, and the first information includes feedback information; the first terminal device sends the feedback information to a second terminal device at the transmission power of the data channel.
本申请实施例中,在数据信道与反馈信道时频域资源重叠时,反馈信息可以与数据信道随路发送,由此本申请实施例对数据信道的发射功率进行了改进,使得在该情况下的数据信道的发射功率的分配更加准确。In an embodiment of the present application, when the time-frequency domain resources of the data channel and the feedback channel overlap, the feedback information can be sent along with the data channel. Therefore, the embodiment of the present application improves the transmission power of the data channel, making the allocation of the transmission power of the data channel in this case more accurate.
结合第一方面,在一种可能的实现方式中,所述数据信道的发射功率根据最大发射功率、所述数据信道的带宽以及第一调整参数确定;或者,所述数据信道的发射功率根据所述最大发射功率、所述数据信道的带宽、控制信道的带宽以及所述第一调整参数确定。In combination with the first aspect, in a possible implementation method, the transmit power of the data channel is determined according to the maximum transmit power, the bandwidth of the data channel and the first adjustment parameter; or, the transmit power of the data channel is determined according to the maximum transmit power, the bandwidth of the data channel, the bandwidth of the control channel and the first adjustment parameter.
本申请实施例中,第一调整参数可理解为能够调整数据信道的发射功率的参数,该第一调整参数可以为与反馈信息相关的参数,由此,使得终端设备在分配数据信道的发射功率时,能够根据数据信道中所传输的实际信息来调整该数据信道的发射功率,进一步提高数据信道的发射功率的准确度。In an embodiment of the present application, the first adjustment parameter can be understood as a parameter that can adjust the transmission power of the data channel. The first adjustment parameter can be a parameter related to the feedback information. As a result, when allocating the transmission power of the data channel, the terminal device can adjust the transmission power of the data channel according to the actual information transmitted in the data channel, thereby further improving the accuracy of the transmission power of the data channel.
结合第一方面或第一方面的任一种可能的实现方式中,所述第一调整参数根据第一子参数和第二子参数确定,所述第一子参数为与调整与编码策略MCS相关的参数,所述第二子参数为与所述数据信道的资源单元RE数量以及编码块的大小相关的参数,或者,所述第二子参数为与所述数据信道的RE数量以及所述反馈信息的比特数相关的参数。In combination with the first aspect or any possible implementation of the first aspect, the first adjustment parameter is determined according to a first sub-parameter and a second sub-parameter, the first sub-parameter is a parameter related to the adjustment and coding strategy MCS, and the second sub-parameter is a parameter related to the number of resource units RE of the data channel and the size of the coding block, or the second sub-parameter is a parameter related to the number of REs of the data channel and the number of bits of the feedback information.
结合第一方面或第一方面的任一种可能的实现方式中,所述第一调整参数根据第一子参数、第二子参数以及第三子参数确定,所述第一子参数为与调整与编码策略MCS相关的参数,所述第二子参数为与所述数据信道的资源单元RE数量以及编码块的大小相关的参数,或者,所述第二子参数为与所述数据信道的RE数量以及所述反馈信息的比特数相关的参数,所述第三子参数为与所述反馈信息的比特数相关的偏移参数。In combination with the first aspect or any possible implementation of the first aspect, the first adjustment parameter is determined according to a first sub-parameter, a second sub-parameter and a third sub-parameter, the first sub-parameter is a parameter related to the adjustment and coding strategy MCS, the second sub-parameter is a parameter related to the number of resource units RE of the data channel and the size of the coding block, or the second sub-parameter is a parameter related to the number of REs of the data channel and the number of bits of the feedback information, and the third sub-parameter is an offset parameter related to the number of bits of the feedback information.
结合第一方面或第一方面的任一种可能的实现方式中,所述反馈信息中包括混合自动重传请求HARQ信息,或者,所述反馈信息中包括参考信息,或者,所述反馈信息中包括所述HARQ信息和所述参考信息;其中,所述参考信息包括所述第一终端设备与所述第二终端设备之间的信息,和/或,所述第一终端设备与网络设备之间的信息。In combination with the first aspect or any possible implementation of the first aspect, the feedback information includes hybrid automatic repeat request HARQ information, or the feedback information includes reference information, or the feedback information includes the HARQ information and the reference information; wherein the reference information includes information between the first terminal device and the second terminal device, and/or information between the first terminal device and a network device.
结合第一方面或第一方面的任一种可能的实现方式中,所述参考信息包括所述第一终端设备与所述第二终端设备之间的参考状态信息、参考信号接收功率、参考信号接收质量和所述第一终端设备与所述第二终端设备之间的路径损耗信息中的一项或多项。In combination with the first aspect or any possible implementation of the first aspect, the reference information includes one or more of reference state information between the first terminal device and the second terminal device, reference signal reception power, reference signal reception quality, and path loss information between the first terminal device and the second terminal device.
结合第一方面或第一方面的任一种可能的实现方式中,所述参考信息包括与距离相关的信息。In combination with the first aspect or any possible implementation manner of the first aspect, the reference information includes information related to the distance.
结合第一方面或第一方面的任一种可能的实现方式中,所述与距离相关的信息包括所述第一终端设备与网络设备之间的距离信息、所述第一终端设备与所述第二终端设备之间的距离信息、所述第一终端设备覆盖的通信距离信息和所述第一终端设备处于所述网络设备覆盖范围内的反馈信息中的一项或多项。In combination with the first aspect or any possible implementation of the first aspect, the distance-related information includes one or more of the distance information between the first terminal device and the network device, the distance information between the first terminal device and the second terminal device, the communication distance information covered by the first terminal device, and feedback information that the first terminal device is within the coverage range of the network device.
结合第一方面或第一方面的任一种可能的实现方式中,所述数据信道的发射功率满足如下公式:In combination with the first aspect or any possible implementation manner of the first aspect, the transmit power of the data channel satisfies the following formula:
P1=min{PCMAX,f1(M1)+PO+α×PL+β}P 1 =min{P CMAX ,f 1 (M 1 )+P O +α×PL+β}
其中,所述P1为所述数据信道的发射功率,所述PCMAX为所述最大发射功率,所述f1(M1)为所述数据信道的带宽M1的函数,所述PO为所述第二终端设备的目标接收功率,所述PL为路径损耗估计值,所述β为所述第一调整参数。Wherein, the P1 is the transmit power of the data channel, the PCMAX is the maximum transmit power, the f1 ( M1 ) is a function of the bandwidth M1 of the data channel, the PO is the target receive power of the second terminal device, the PL is the path loss estimation value, and the β is the first adjustment parameter.
结合第一方面或第一方面的任一种可能的实现方式中,所述数据信道的发射功率满足如下公式:In combination with the first aspect or any possible implementation manner of the first aspect, the transmit power of the data channel satisfies the following formula:
P1=f2(M1+M2)+min{PCMAX,f3(M1+M2)+PO+α×PL+β}P 1 =f 2 (M 1 +M 2 )+min{P CMAX ,f 3 (M 1 +M 2 )+P O +α×PL+β}
其中,所述P1为所述数据信道的发射功率,所述PCMAX为所述最大发射功率,所述f2(M1+M2)和所述f3(M1+M2)分别为所述数据信道的带宽M1和所述控制信道的带宽M2的函数,所述PO为所述第二终端设备的目标接收功率,所述PL为路径损耗估计值,所述β为所述第一调整参数。Among them, the P1 is the transmit power of the data channel, the PCMAX is the maximum transmit power, the f2 ( M1 + M2 ) and the f3 ( M1 + M2 ) are functions of the bandwidth M1 of the data channel and the bandwidth M2 of the control channel respectively, the PO is the target received power of the second terminal device, the PL is the path loss estimation value, and the β is the first adjustment parameter.
结合第一方面或第一方面的任一种可能的实现方式中,所述数据信道的发射功率满足如下公式:In combination with the first aspect or any possible implementation manner of the first aspect, the transmit power of the data channel satisfies the following formula:
P1=min{PCMAX-f4(M1+M2),f3(M1+M2)+PO+α×PL+β}P 1 =min{P CMAX -f 4 (M 1 +M 2 ),f 3 (M 1 +M 2 )+P O +α×PL+β}
其中,所述P1为所述数据信道的发射功率,所述PCMAX为所述最大发射功率,所述f3(M1+M2)和所述f4(M1+M2)分别为所述数据信道的带宽M1和所述控制信道的带宽M2的函数,所述PO为所述第二终端设备的目标接收功率,所述PL为路径损耗估计值,所述β为所述第一调整参数。Among them, the P1 is the transmit power of the data channel, the PCMAX is the maximum transmit power, the f3 ( M1 + M2 ) and the f4 ( M1 + M2 ) are functions of the bandwidth M1 of the data channel and the bandwidth M2 of the control channel respectively, the PO is the target received power of the second terminal device, the PL is the path loss estimation value, and the β is the first adjustment parameter.
第二方面,本申请实施例还提供了一种功率控制方法,包括:第一终端设备确定反馈信道的发射功率;其中,所述反馈信道与数据信道既有时域重叠,又有频域重叠,或者,所述反馈信道与所述数据信道有频域重叠且无时域重叠,或者,所述反馈信道与所述数据信道有时域重叠且无频域重叠;所述第一终端设备以所述反馈信道的发射功率向第二终端设备发送反馈信息。In the second aspect, an embodiment of the present application also provides a power control method, including: a first terminal device determines the transmission power of a feedback channel; wherein the feedback channel and the data channel have both time domain overlap and frequency domain overlap, or the feedback channel and the data channel have frequency domain overlap but no time domain overlap, or the feedback channel and the data channel have time domain overlap but no frequency domain overlap; the first terminal device sends feedback information to the second terminal device at the transmission power of the feedback channel.
本申请实施例中,反馈信道与数据信道之间的复用方式可以包括多种可能(即不同的帧结构),如反馈信道可能与数据信道既有时域重叠又有频域重叠,又如反馈信道可能与数据信道有频域重叠但无时域重叠,又如反馈信道可能与数据信道有时域重叠但无频域重叠,其中,不同的复用方式对应不同的发射功率,因此终端设备可根据多种可能中的一种可能来确定反馈信道的发射功率,避免了在所有的情况下,都采用一种方式来确定反馈信道的发射功率,从而有效提高了反馈信道发射功率确定的准确度,合理地对反馈信道发射功率进行控制。In an embodiment of the present application, the multiplexing method between the feedback channel and the data channel may include multiple possibilities (i.e., different frame structures), such as the feedback channel may have both time domain overlap and frequency domain overlap with the data channel, the feedback channel may have frequency domain overlap but no time domain overlap with the data channel, and the feedback channel may have time domain overlap but no frequency domain overlap with the data channel. Different multiplexing methods correspond to different transmit powers, so the terminal device can determine the transmit power of the feedback channel according to one of the multiple possibilities, avoiding the use of one method to determine the transmit power of the feedback channel in all cases, thereby effectively improving the accuracy of determining the transmit power of the feedback channel and reasonably controlling the transmit power of the feedback channel.
结合第二方面,在一种可能的实现方式中,所述反馈信道的发射功率根据最大发送功率、所述反馈信道的带宽、所述数据信道的带宽、所述反馈信道与所述数据信道的功率差值以及第二调整参数确定;或者,所述反馈信道的发射功率根据所述最大发射功率、所述反馈信道的带宽、控制信道的带宽、所述反馈信道与所述控制信道的功率差值以及第二调整参数确定。In combination with the second aspect, in a possible implementation method, the transmit power of the feedback channel is determined according to the maximum transmit power, the bandwidth of the feedback channel, the bandwidth of the data channel, the power difference between the feedback channel and the data channel, and the second adjustment parameter; or, the transmit power of the feedback channel is determined according to the maximum transmit power, the bandwidth of the feedback channel, the bandwidth of the control channel, the power difference between the feedback channel and the control channel, and the second adjustment parameter.
本申请实施例中,反馈信道的发射功率可根据不同的帧结构来确定反馈信道的发射功率。In the embodiment of the present application, the transmission power of the feedback channel may be determined according to different frame structures.
结合第二方面或第二方面的任一种可能的实现方式中,所述第二调整参数由高层信令配置,或者,所述第二调整参数为预定义的。In combination with the second aspect or any possible implementation manner of the second aspect, the second adjustment parameter is configured by high-layer signaling, or the second adjustment parameter is predefined.
结合第二方面或第二方面的任一种可能的实现方式中,所述第二调整参数与所述反馈信息的比特数以及所述反馈信道的资源元素RE数量相关。In combination with the second aspect or any possible implementation manner of the second aspect, the second adjustment parameter is related to the number of bits of the feedback information and the number of resource elements RE of the feedback channel.
结合第二方面或第二方面的任一种可能的实现方式中,所述反馈信道与所述数据信道的功率差值为预定义的,或者,所述反馈信道与所述数据信道的功率差值由控制信息指示;或者,所述反馈信道与所述数据信道的功率差值由高层信令配置;所述反馈信道与所述控制信道的功率差值为预定义的,或者,所述反馈信道与所述控制信道的功率差值由所述控制信息指示;或者,所述反馈信道与所述控制信道的功率差值由所述高层信令配置。In combination with the second aspect or any possible implementation of the second aspect, the power difference between the feedback channel and the data channel is predefined, or the power difference between the feedback channel and the data channel is indicated by control information; or the power difference between the feedback channel and the data channel is configured by high-level signaling; the power difference between the feedback channel and the control channel is predefined, or the power difference between the feedback channel and the control channel is indicated by the control information; or the power difference between the feedback channel and the control channel is configured by the high-level signaling.
结合第二方面或第二方面的任一种可能的实现方式中,所述反馈信息中包括混合自动重传请求HARQ信息,或者,所述反馈信息中包括参考信息,或者,所述反馈信息中包括所述HARQ信息和所述参考信息;其中,所述参考信息包括所述第一终端设备与所述第二终端设备之间的信息,和/或,所述第一终端设备与网络设备之间的信息。In combination with the second aspect or any possible implementation of the second aspect, the feedback information includes hybrid automatic repeat request HARQ information, or the feedback information includes reference information, or the feedback information includes the HARQ information and the reference information; wherein the reference information includes information between the first terminal device and the second terminal device, and/or information between the first terminal device and a network device.
结合第二方面或第二方面的任一种可能的实现方式中,所述参考信息包括所述第一终端设备与所述第二终端设备之间的参考状态信息、参考信号接收功率、参考信号接收质量和所述第一终端设备与所述第二终端设备之间的路径损耗信息中的一项或多项。In combination with the second aspect or any possible implementation of the second aspect, the reference information includes one or more of reference state information between the first terminal device and the second terminal device, reference signal reception power, reference signal reception quality, and path loss information between the first terminal device and the second terminal device.
结合第二方面或第二方面的任一种可能的实现方式中,所述参考信息包括与距离相关的信息。In combination with the second aspect or any possible implementation manner of the second aspect, the reference information includes information related to the distance.
结合第二方面或第二方面的任一种可能的实现方式中,所述与距离相关的信息包括所述第一终端设备与网络设备之间的距离信息、所述第一终端设备与所述第二终端设备之间的距离信息、所述第一终端设备覆盖的通信距离信息和所述第一终端设备处于所述网络设备覆盖范围内的反馈信息中的一项或多项。In combination with the second aspect or any possible implementation of the second aspect, the distance-related information includes one or more of the distance information between the first terminal device and the network device, the distance information between the first terminal device and the second terminal device, the communication distance information covered by the first terminal device, and feedback information that the first terminal device is within the coverage range of the network device.
结合第二方面或第二方面的任一种可能的实现方式中,所述反馈信道的发射功率满足如下公式:In combination with the second aspect or any possible implementation manner of the second aspect, the transmit power of the feedback channel satisfies the following formula:
P2=f5(M1+M3)+min{PCMAX,f6(M1+M3)+PO+α×PL+Δ}P 2 =f 5 (M 1 +M 3 )+min{P CMAX ,f 6 (M 1 +M 3 )+P O +α×PL+Δ}
其中,所述P2为所述反馈信道的发射功率,所述PCMAX为所述最大发射功率,所述f5(M1+M3)和所述f6(M1+M3)分别为所述数据信道的带宽M1、所述反馈信道的带宽M3以及所述反馈信道与所述数据信道的功率差值的函数,所述PO为所述第二终端设备的目标接收功率,所述PL为路径损耗估计值,所述Δ为所述第二调整参数。Among them, the P2 is the transmission power of the feedback channel, the PCMAX is the maximum transmission power, the f5 ( M1 + M3 ) and the f6 ( M1 + M3 ) are respectively functions of the bandwidth M1 of the data channel, the bandwidth M3 of the feedback channel and the power difference between the feedback channel and the data channel, the PO is the target received power of the second terminal device, the PL is the path loss estimation value, and the Δ is the second adjustment parameter.
结合第二方面或第二方面的任一种可能的实现方式中,所述反馈信道的发射功率满足如下公式:In combination with the second aspect or any possible implementation manner of the second aspect, the transmit power of the feedback channel satisfies the following formula:
P2=f7(M2+M3)+min{PCMAX,f8(M2+M3)+PO+α×PL+Δ}P 2 =f 7 (M 2 +M 3 )+min{P CMAX ,f 8 (M 2 +M 3 )+P O +α×PL+Δ}
其中,所述P2为所述反馈信道的发射功率,所述PCMAX为所述最大发射功率,所述f7(M2+M3)和所述f8(M2+M3)分别为所述控制信道的带宽M2、所述反馈信道的带宽M3以及所述反馈信道与所述控制信道的功率差值的函数,所述PO为所述第二终端设备的目标接收功率,所述PL为路径损耗估计值,所述Δ为所述第二调整参数。Among them, the P2 is the transmission power of the feedback channel, the PCMAX is the maximum transmission power, the f7 ( M2 + M3 ) and the f8 ( M2 + M3 ) are respectively functions of the bandwidth M2 of the control channel, the bandwidth M3 of the feedback channel and the power difference between the feedback channel and the control channel, the PO is the target receiving power of the second terminal device, the PL is the path loss estimation value, and the Δ is the second adjustment parameter.
第三方面,本申请实施例提供了一种功率控制装置,包括:处理单元,用于确定数据信道的发射功率;其中,所述数据信道中包括第一信息,所述第一信息包括反馈信息;发送单元,用于以所述数据信道的发射功率向第二终端设备发送所述反馈信息。In the third aspect, an embodiment of the present application provides a power control device, including: a processing unit, used to determine the transmission power of a data channel; wherein the data channel includes first information, and the first information includes feedback information; a sending unit, used to send the feedback information to a second terminal device at the transmission power of the data channel.
结合第三方面,在一种可能的实现方式中,所述数据信道的发射功率根据最大发射功率、所述数据信道的带宽以及第一调整参数确定;或者,所述数据信道的发射功率根据所述最大发射功率、所述数据信道的带宽、控制信道的带宽以及所述第一调整参数确定。In combination with the third aspect, in one possible implementation, the transmit power of the data channel is determined according to the maximum transmit power, the bandwidth of the data channel and the first adjustment parameter; or, the transmit power of the data channel is determined according to the maximum transmit power, the bandwidth of the data channel, the bandwidth of the control channel and the first adjustment parameter.
结合第三方面或第三方面的任一种可能的实现方式中,所述第一调整参数根据第一子参数和第二子参数确定,所述第一子参数为与调整与编码策略MCS相关的参数,所述第二子参数为与所述数据信道的资源单元RE数量以及编码块的大小相关的参数,或者,所述第二子参数为与所述数据信道的RE数量以及所述反馈信息的比特数相关的参数。In combination with the third aspect or any possible implementation of the third aspect, the first adjustment parameter is determined according to a first sub-parameter and a second sub-parameter, the first sub-parameter is a parameter related to the adjustment and coding strategy MCS, and the second sub-parameter is a parameter related to the number of resource units RE of the data channel and the size of the coding block, or the second sub-parameter is a parameter related to the number of REs of the data channel and the number of bits of the feedback information.
结合第三方面或第三方面的任一种可能的实现方式中,所述第一调整参数根据第一子参数、第二子参数以及第三子参数确定,所述第一子参数为与调整与编码策略MCS相关的参数,所述第二子参数为与所述数据信道的资源单元RE数量以及编码块的大小相关的参数,或者,所述第二子参数为与所述数据信道的RE数量以及所述反馈信息的比特数相关的参数,所述第三子参数为与所述反馈信息的比特数相关的偏移参数。In combination with the third aspect or any possible implementation of the third aspect, the first adjustment parameter is determined according to a first sub-parameter, a second sub-parameter and a third sub-parameter, the first sub-parameter is a parameter related to the adjustment and coding strategy MCS, the second sub-parameter is a parameter related to the number of resource units RE of the data channel and the size of the coding block, or the second sub-parameter is a parameter related to the number of REs of the data channel and the number of bits of the feedback information, and the third sub-parameter is an offset parameter related to the number of bits of the feedback information.
结合第三方面或第三方面的任一种可能的实现方式中,所述反馈信息中包括混合自动重传请求HARQ信息,或者,所述反馈信息中包括参考信息,或者,所述反馈信息中包括所述HARQ信息和所述参考信息;其中,所述参考信息包括所述第一终端设备与所述第二终端设备之间的信息,和/或,所述第一终端设备与网络设备之间的信息。In combination with the third aspect or any possible implementation of the third aspect, the feedback information includes hybrid automatic repeat request HARQ information, or the feedback information includes reference information, or the feedback information includes the HARQ information and the reference information; wherein the reference information includes information between the first terminal device and the second terminal device, and/or information between the first terminal device and a network device.
结合第三方面或第三方面的任一种可能的实现方式中,所述参考信息包括所述第一终端设备与所述第二终端设备之间的参考状态信息、参考信号接收功率、参考信号接收质量和所述第一终端设备与所述第二终端设备之间的路径损耗信息中的一项或多项。In combination with the third aspect or any possible implementation of the third aspect, the reference information includes one or more of reference state information between the first terminal device and the second terminal device, reference signal reception power, reference signal reception quality, and path loss information between the first terminal device and the second terminal device.
结合第三方面或第三方面的任一种可能的实现方式中,所述参考信息包括与距离相关的信息。In combination with the third aspect or any possible implementation manner of the third aspect, the reference information includes information related to the distance.
结合第三方面或第三方面的任一种可能的实现方式中,所述与距离相关的信息包括所述第一终端设备与网络设备之间的距离信息、所述第一终端设备与所述第二终端设备之间的距离信息、所述第一终端设备覆盖的通信距离信息和所述第一终端设备处于所述网络设备覆盖范围内的反馈信息中的一项或多项。In combination with the third aspect or any possible implementation of the third aspect, the distance-related information includes one or more of the distance information between the first terminal device and the network device, the distance information between the first terminal device and the second terminal device, the communication distance information covered by the first terminal device, and feedback information that the first terminal device is within the coverage range of the network device.
结合第三方面或第三方面的任一种可能的实现方式中,所述数据信道的发射功率满足如下公式:In combination with the third aspect or any possible implementation manner of the third aspect, the transmit power of the data channel satisfies the following formula:
P1=min{PCMAX,f1(M1)+PO+α×PL+β}P 1 =min{P CMAX ,f 1 (M 1 )+P O +α×PL+β}
其中,所述P1为所述数据信道的发射功率,所述PCMAX为所述最大发射功率,所述f1(M1)为所述数据信道的带宽M1的函数,所述PO为所述第二终端设备的目标接收功率,所述PL为路径损耗估计值,所述β为所述第一调整参数。Wherein, the P1 is the transmit power of the data channel, the PCMAX is the maximum transmit power, the f1 ( M1 ) is a function of the bandwidth M1 of the data channel, the PO is the target receive power of the second terminal device, the PL is the path loss estimation value, and the β is the first adjustment parameter.
结合第三方面或第三方面的任一种可能的实现方式中,所述数据信道的发射功率满足如下公式:In combination with the third aspect or any possible implementation manner of the third aspect, the transmit power of the data channel satisfies the following formula:
P1=f2(M1+M2)+min{PCMAX,f3(M1+M2)+PO+α×PL+β}P 1 =f 2 (M 1 +M 2 )+min{P CMAX ,f 3 (M 1 +M 2 )+P O +α×PL+β}
其中,所述P1为所述数据信道的发射功率,所述PCMAX为所述最大发射功率,所述f2(M1+M2)和所述f3(M1+M2)分别为所述数据信道的带宽M1和所述控制信道的带宽M2的函数,所述PO为所述第二终端设备的目标接收功率,所述PL为路径损耗估计值,所述β为所述第一调整参数。Among them, the P1 is the transmit power of the data channel, the PCMAX is the maximum transmit power, the f2 ( M1 + M2 ) and the f3 ( M1 + M2 ) are functions of the bandwidth M1 of the data channel and the bandwidth M2 of the control channel respectively, the PO is the target received power of the second terminal device, the PL is the path loss estimation value, and the β is the first adjustment parameter.
结合第三方面或第三方面的任一种可能的实现方式中,所述数据信道的发射功率满足如下公式:In combination with the third aspect or any possible implementation manner of the third aspect, the transmit power of the data channel satisfies the following formula:
P1=min{PCMAX-f4(M1+M2),f3(M1+M2)+PO+α×PL+β}P 1 =min{P CMAX -f 4 (M 1 +M 2 ),f 3 (M 1 +M 2 )+P O +α×PL+β}
其中,所述P1为所述数据信道的发射功率,所述PCMAX为所述最大发射功率,所述f3(M1+M2)和所述f4(M1+M2)分别为所述数据信道的带宽M1和所述控制信道的带宽M2的函数,所述PO为所述第二终端设备的目标接收功率,所述PL为路径损耗估计值,所述β为所述第一调整参数。Among them, the P1 is the transmit power of the data channel, the PCMAX is the maximum transmit power, the f3 ( M1 + M2 ) and the f4 ( M1 + M2 ) are functions of the bandwidth M1 of the data channel and the bandwidth M2 of the control channel respectively, the PO is the target received power of the second terminal device, the PL is the path loss estimation value, and the β is the first adjustment parameter.
第四方面,本申请实施例还提供了一种功率控制装置,包括:处理单元,用于确定反馈信道的发射功率;其中,所述反馈信道与数据信道既有时域重叠,又有频域重叠,或者,所述反馈信道与所述数据信道有频域重叠且无时域重叠,或者,所述反馈信道与所述数据信道有时域重叠且无频域重叠;发送单元,用于以所述反馈信道的发射功率向第二终端设备发送反馈信息。In a fourth aspect, an embodiment of the present application also provides a power control device, comprising: a processing unit, used to determine the transmission power of a feedback channel; wherein the feedback channel and the data channel have both time domain overlap and frequency domain overlap, or the feedback channel and the data channel have frequency domain overlap but no time domain overlap, or the feedback channel and the data channel have time domain overlap but no frequency domain overlap; a sending unit, used to send feedback information to a second terminal device at the transmission power of the feedback channel.
结合第四方面,在一种可能的实现方式中,所述反馈信道的发射功率根据最大发送功率、所述反馈信道的带宽、所述数据信道的带宽、所述反馈信道与所述数据信道的功率差值以及第二调整参数确定;或者,所述反馈信道的发射功率根据所述最大发射功率、所述反馈信道的带宽、控制信道的带宽、所述反馈信道与所述控制信道的功率差值以及第二调整参数确定。In combination with the fourth aspect, in a possible implementation method, the transmit power of the feedback channel is determined according to the maximum transmit power, the bandwidth of the feedback channel, the bandwidth of the data channel, the power difference between the feedback channel and the data channel, and the second adjustment parameter; or, the transmit power of the feedback channel is determined according to the maximum transmit power, the bandwidth of the feedback channel, the bandwidth of the control channel, the power difference between the feedback channel and the control channel, and the second adjustment parameter.
结合第四方面或第四方面的任一种可能的实现方式中,所述第二调整参数由高层信令配置,或者,所述第二调整参数为预定义的。In combination with the fourth aspect or any possible implementation manner of the fourth aspect, the second adjustment parameter is configured by high-layer signaling, or the second adjustment parameter is predefined.
结合第四方面或第四方面的任一种可能的实现方式中,所述第二调整参数与所述反馈信息的比特数以及所述反馈信道的资源元素RE数量相关。In combination with the fourth aspect or any possible implementation manner of the fourth aspect, the second adjustment parameter is related to the number of bits of the feedback information and the number of resource elements RE of the feedback channel.
结合第四方面或第四方面的任一种可能的实现方式中,所述反馈信道与所述数据信道的功率差值为预定义的,或者,所述反馈信道与所述数据信道的功率差值由控制信息指示;或者,所述反馈信道与所述数据信道的功率差值由高层信令配置;所述反馈信道与所述控制信道的功率差值为预定义的,或者,所述反馈信道与所述控制信道的功率差值由所述控制信息指示;或者,所述反馈信道与所述控制信道的功率差值由所述高层信令配置。In combination with the fourth aspect or any possible implementation of the fourth aspect, the power difference between the feedback channel and the data channel is predefined, or the power difference between the feedback channel and the data channel is indicated by control information; or the power difference between the feedback channel and the data channel is configured by high-level signaling; the power difference between the feedback channel and the control channel is predefined, or the power difference between the feedback channel and the control channel is indicated by the control information; or the power difference between the feedback channel and the control channel is configured by the high-level signaling.
结合第四方面或第四方面的任一种可能的实现方式中,所述反馈信息中包括混合自动重传请求HARQ信息,或者,所述反馈信息中包括参考信息,或者,所述反馈信息中包括所述HARQ信息和所述参考信息;其中,所述参考信息包括所述第一终端设备与所述第二终端设备之间的信息,和/或,所述第一终端设备与网络设备之间的信息。In combination with the fourth aspect or any possible implementation of the fourth aspect, the feedback information includes hybrid automatic repeat request HARQ information, or the feedback information includes reference information, or the feedback information includes the HARQ information and the reference information; wherein the reference information includes information between the first terminal device and the second terminal device, and/or information between the first terminal device and a network device.
结合第四方面或第四方面的任一种可能的实现方式中,所述参考信息包括所述第一终端设备与所述第二终端设备之间的参考状态信息、参考信号接收功率、参考信号接收质量和所述第一终端设备与所述第二终端设备之间的路径损耗信息中的一项或多项。In combination with the fourth aspect or any possible implementation of the fourth aspect, the reference information includes one or more of reference state information between the first terminal device and the second terminal device, reference signal reception power, reference signal reception quality, and path loss information between the first terminal device and the second terminal device.
结合第四方面或第四方面的任一种可能的实现方式中,所述参考信息包括与距离相关的信息。In combination with the fourth aspect or any possible implementation manner of the fourth aspect, the reference information includes information related to the distance.
结合第四方面或第四方面的任一种可能的实现方式中,所述与距离相关的信息包括所述第一终端设备与网络设备之间的距离信息、所述第一终端设备与所述第二终端设备之间的距离信息、所述第一终端设备覆盖的通信距离信息和所述第一终端设备处于所述网络设备覆盖范围内的反馈信息中的一项或多项。In combination with the fourth aspect or any possible implementation of the fourth aspect, the distance-related information includes one or more of the distance information between the first terminal device and the network device, the distance information between the first terminal device and the second terminal device, the communication distance information covered by the first terminal device, and feedback information that the first terminal device is within the coverage range of the network device.
结合第四方面或第四方面的任一种可能的实现方式中,所述反馈信道的发射功率满足如下公式:In combination with the fourth aspect or any possible implementation manner of the fourth aspect, the transmit power of the feedback channel satisfies the following formula:
P2=f5(M1+M3)+min{PCMAX,f6(M1+M3)+PO+α×PL+Δ}P 2 =f 5 (M 1 +M 3 )+min{P CMAX ,f 6 (M 1 +M 3 )+P O +α×PL+Δ}
其中,所述P2为所述反馈信道的发射功率,所述PCMAX为所述最大发射功率,所述f5(M1+M3)和所述f6(M1+M3)分别为所述数据信道的带宽M1、所述反馈信道的带宽M3以及所述反馈信道与所述数据信道的功率差值的函数,所述PO为所述第二终端设备的目标接收功率,所述PL为路径损耗估计值,所述Δ为所述第二调整参数。Among them, the P2 is the transmission power of the feedback channel, the PCMAX is the maximum transmission power, the f5 ( M1 + M3 ) and the f6 ( M1 + M3 ) are respectively functions of the bandwidth M1 of the data channel, the bandwidth M3 of the feedback channel and the power difference between the feedback channel and the data channel, the PO is the target received power of the second terminal device, the PL is the path loss estimation value, and the Δ is the second adjustment parameter.
结合第四方面或第四方面的任一种可能的实现方式中,所述反馈信道的发射功率满足如下公式:In combination with the fourth aspect or any possible implementation manner of the fourth aspect, the transmit power of the feedback channel satisfies the following formula:
P2=f7(M2+M3)+min{PCMAX,f8(M2+M3)+PO+α×PL+Δ}P 2 =f 7 (M 2 +M 3 )+min{P CMAX ,f 8 (M 2 +M 3 )+P O +α×PL+Δ}
其中,所述P2为所述反馈信道的发射功率,所述PCMAX为所述最大发射功率,所述f7(M2+M3)和所述f8(M2+M3)分别为所述控制信道的带宽M2、所述反馈信道的带宽M3以及所述反馈信道与所述控制信道的功率差值的函数,所述PO为所述第二终端设备的目标接收功率,所述PL为路径损耗估计值,所述Δ为所述第二调整参数。Among them, the P2 is the transmission power of the feedback channel, the PCMAX is the maximum transmission power, the f7 ( M2 + M3 ) and the f8 ( M2 + M3 ) are respectively functions of the bandwidth M2 of the control channel, the bandwidth M3 of the feedback channel and the power difference between the feedback channel and the control channel, the PO is the target receiving power of the second terminal device, the PL is the path loss estimation value, and the Δ is the second adjustment parameter.
第五方面,本申请实施例提供了一种终端设备,所述终端设备作为第一终端设备使用,所述第一终端设备包括处理器、存储器和收发器,所述处理器与所述存储器耦合,所述处理器,用于确定数据信道的发射功率;其中,所述数据信道中包括第一信息,所述第一信息包括反馈信息;所述收发器与所述处理器耦合,所述收发器,用于以所述数据信道的发射功率向第二终端设备发送所述反馈信息。In a fifth aspect, an embodiment of the present application provides a terminal device, which is used as a first terminal device, and the first terminal device includes a processor, a memory and a transceiver, the processor is coupled to the memory, and the processor is used to determine the transmission power of a data channel; wherein the data channel includes first information, and the first information includes feedback information; the transceiver is coupled to the processor, and the transceiver is used to send the feedback information to a second terminal device at the transmission power of the data channel.
结合第五方面,在一种可能的实现方式中,所述数据信道的发射功率根据最大发射功率、所述数据信道的带宽以及第一调整参数确定;或者,所述数据信道的发射功率根据所述最大发射功率、所述数据信道的带宽、控制信道的带宽以及所述第一调整参数确定。In combination with the fifth aspect, in a possible implementation method, the transmit power of the data channel is determined according to the maximum transmit power, the bandwidth of the data channel and the first adjustment parameter; or, the transmit power of the data channel is determined according to the maximum transmit power, the bandwidth of the data channel, the bandwidth of the control channel and the first adjustment parameter.
结合第五方面或第五方面的任一种可能的实现方式中,所述第一调整参数根据第一子参数和第二子参数确定,所述第一子参数为与调整与编码策略MCS相关的参数,所述第二子参数为与所述数据信道的资源单元RE数量以及编码块的大小相关的参数,或者,所述第二子参数为与所述数据信道的RE数量以及所述反馈信息的比特数相关的参数。In combination with the fifth aspect or any possible implementation of the fifth aspect, the first adjustment parameter is determined according to a first sub-parameter and a second sub-parameter, the first sub-parameter is a parameter related to the adjustment and coding strategy MCS, and the second sub-parameter is a parameter related to the number of resource units RE of the data channel and the size of the coding block, or the second sub-parameter is a parameter related to the number of REs of the data channel and the number of bits of the feedback information.
结合第五方面或第五方面的任一种可能的实现方式中,所述第一调整参数根据第一子参数、第二子参数以及第三子参数确定,所述第一子参数为与调整与编码策略MCS相关的参数,所述第二子参数为与所述数据信道的资源单元RE数量以及编码块的大小相关的参数,或者,所述第二子参数为与所述数据信道的RE数量以及所述反馈信息的比特数相关的参数,所述第三子参数为与所述反馈信息的比特数相关的偏移参数。In combination with the fifth aspect or any possible implementation of the fifth aspect, the first adjustment parameter is determined according to a first sub-parameter, a second sub-parameter and a third sub-parameter, the first sub-parameter is a parameter related to the adjustment and coding strategy MCS, the second sub-parameter is a parameter related to the number of resource units RE of the data channel and the size of the coding block, or the second sub-parameter is a parameter related to the number of REs of the data channel and the number of bits of the feedback information, and the third sub-parameter is an offset parameter related to the number of bits of the feedback information.
结合第五方面或第五方面的任一种可能的实现方式中,所述反馈信息中包括混合自动重传请求HARQ信息,或者,所述反馈信息中包括参考信息,或者,所述反馈信息中包括所述HARQ信息和所述参考信息;其中,所述参考信息包括所述第一终端设备与所述第二终端设备之间的信息,和/或,所述第一终端设备与网络设备之间的信息。In combination with the fifth aspect or any possible implementation of the fifth aspect, the feedback information includes hybrid automatic repeat request HARQ information, or the feedback information includes reference information, or the feedback information includes the HARQ information and the reference information; wherein the reference information includes information between the first terminal device and the second terminal device, and/or information between the first terminal device and a network device.
结合第五方面或第五方面的任一种可能的实现方式中,所述参考信息包括所述第一终端设备与所述第二终端设备之间的参考状态信息、参考信号接收功率、参考信号接收质量和所述第一终端设备与所述第二终端设备之间的路径损耗信息中的一项或多项。In combination with the fifth aspect or any possible implementation of the fifth aspect, the reference information includes one or more of reference state information between the first terminal device and the second terminal device, reference signal reception power, reference signal reception quality, and path loss information between the first terminal device and the second terminal device.
结合第五方面或第五方面的任一种可能的实现方式中,所述数据信道的发射功率满足如下公式:In combination with the fifth aspect or any possible implementation manner of the fifth aspect, the transmit power of the data channel satisfies the following formula:
P1=min{PCMAX,f1(M1)+PO+α×PL+β}P 1 =min{P CMAX ,f 1 (M 1 )+P O +α×PL+β}
其中,所述P1为所述数据信道的发射功率,所述PCMAX为所述最大发射功率,所述f1(M1)为所述数据信道的带宽M1的函数,所述PO为所述第二终端设备的目标接收功率,所述PL为路径损耗估计值,所述β为所述第一调整参数。Wherein, the P1 is the transmit power of the data channel, the PCMAX is the maximum transmit power, the f1 ( M1 ) is a function of the bandwidth M1 of the data channel, the PO is the target receive power of the second terminal device, the PL is the path loss estimation value, and the β is the first adjustment parameter.
结合第五方面或第五方面的任一种可能的实现方式中,所述数据信道的发射功率满足如下公式:In combination with the fifth aspect or any possible implementation manner of the fifth aspect, the transmit power of the data channel satisfies the following formula:
P1=f2(M1+M2)+min{PCMAX,f3(M1+M2)+PO+α×PL+β}P 1 =f 2 (M 1 +M 2 )+min{P CMAX ,f 3 (M 1 +M 2 )+P O +α×PL+β}
其中,所述P1为所述数据信道的发射功率,所述PCMAX为所述最大发射功率,所述f2(M1+M2)和所述f3(M1+M2)分别为所述数据信道的带宽M1和所述控制信道的带宽M2的函数,所述PO为所述第二终端设备的目标接收功率,所述PL为路径损耗估计值,所述β为所述第一调整参数。Among them, the P1 is the transmit power of the data channel, the PCMAX is the maximum transmit power, the f2 ( M1 + M2 ) and the f3 ( M1 + M2 ) are functions of the bandwidth M1 of the data channel and the bandwidth M2 of the control channel respectively, the PO is the target received power of the second terminal device, the PL is the path loss estimation value, and the β is the first adjustment parameter.
结合第五方面或第五方面的任一种可能的实现方式中,所述数据信道的发射功率满足如下公式:In combination with the fifth aspect or any possible implementation manner of the fifth aspect, the transmit power of the data channel satisfies the following formula:
P1=min{PCMAX-f4(M1+M2),f3(M1+M2)+PO+α×PL+β}P 1 =min{P CMAX -f 4 (M 1 +M 2 ),f 3 (M 1 +M 2 )+P O +α×PL+β}
其中,所述P1为所述数据信道的发射功率,所述PCMAX为所述最大发射功率,所述f3(M1+M2)和所述f4(M1+M2)分别为所述数据信道的带宽M1和所述控制信道的带宽M2的函数,所述PO为所述第二终端设备的目标接收功率,所述PL为路径损耗估计值,所述β为所述第一调整参数。Among them, the P1 is the transmit power of the data channel, the PCMAX is the maximum transmit power, the f3 ( M1 + M2 ) and the f4 ( M1 + M2 ) are functions of the bandwidth M1 of the data channel and the bandwidth M2 of the control channel respectively, the PO is the target received power of the second terminal device, the PL is the path loss estimation value, and the β is the first adjustment parameter.
第六方面,本申请实施例还提供了一种终端设备,所述终端设备作为第一终端设备使用,所述第一终端设备包括处理器、存储器和收发器,所述处理器与所述存储器耦合,所述处理器,用于确定反馈信道的发射功率;其中,所述反馈信道与数据信道既有时域重叠,又有频域重叠,或者,所述反馈信道与所述数据信道有频域重叠且无时域重叠,或者,所述反馈信道与所述数据信道有时域重叠且无频域重叠;所述收发器与所述处理器耦合,所述收发器,用于以所述反馈信道的发射功率向第二终端设备发送反馈信息。In the sixth aspect, an embodiment of the present application also provides a terminal device, which is used as a first terminal device, and the first terminal device includes a processor, a memory and a transceiver, the processor is coupled to the memory, and the processor is used to determine the transmission power of a feedback channel; wherein the feedback channel has both time domain overlap and frequency domain overlap with the data channel, or the feedback channel has frequency domain overlap and no time domain overlap with the data channel, or the feedback channel has time domain overlap and no frequency domain overlap with the data channel; the transceiver is coupled to the processor, and the transceiver is used to send feedback information to the second terminal device at the transmission power of the feedback channel.
结合第六方面,在一种可能的实现方式中,所述反馈信道的发射功率根据最大发送功率、所述反馈信道的带宽、所述数据信道的带宽、所述反馈信道与所述数据信道的功率差值以及第二调整参数确定;或者,所述反馈信道的发射功率根据所述最大发射功率、所述反馈信道的带宽、控制信道的带宽、所述反馈信道与所述控制信道的功率差值以及第二调整参数确定。In combination with the sixth aspect, in a possible implementation method, the transmit power of the feedback channel is determined according to the maximum transmit power, the bandwidth of the feedback channel, the bandwidth of the data channel, the power difference between the feedback channel and the data channel, and the second adjustment parameter; or, the transmit power of the feedback channel is determined according to the maximum transmit power, the bandwidth of the feedback channel, the bandwidth of the control channel, the power difference between the feedback channel and the control channel, and the second adjustment parameter.
结合第六方面或第六方面的任一种可能的实现方式中,所述第二调整参数由高层信令配置,或者,所述第二调整参数为预定义的。In combination with the sixth aspect or any possible implementation manner of the sixth aspect, the second adjustment parameter is configured by high-layer signaling, or the second adjustment parameter is predefined.
结合第六方面或第六方面的任一种可能的实现方式中,所述第二调整参数与所述反馈信息的比特数以及所述反馈信道的资源元素RE数量相关。In combination with the sixth aspect or any possible implementation manner of the sixth aspect, the second adjustment parameter is related to the number of bits of the feedback information and the number of resource elements RE of the feedback channel.
结合第六方面或第六方面的任一种可能的实现方式中,所述反馈信道与所述数据信道的功率差值为预定义的,或者,所述反馈信道与所述数据信道的功率差值由控制信息指示;或者,所述反馈信道与所述数据信道的功率差值由高层信令配置;所述反馈信道与所述控制信道的功率差值为预定义的,或者,所述反馈信道与所述控制信道的功率差值由所述控制信息指示;或者,所述反馈信道与所述控制信道的功率差值由所述高层信令配置。In combination with the sixth aspect or any possible implementation of the sixth aspect, the power difference between the feedback channel and the data channel is predefined, or the power difference between the feedback channel and the data channel is indicated by control information; or the power difference between the feedback channel and the data channel is configured by high-level signaling; the power difference between the feedback channel and the control channel is predefined, or the power difference between the feedback channel and the control channel is indicated by the control information; or the power difference between the feedback channel and the control channel is configured by the high-level signaling.
结合第六方面或第六方面的任一种可能的实现方式中,所述反馈信息中包括混合自动重传请求HARQ信息,或者,所述反馈信息中包括参考信息,或者,所述反馈信息中包括所述HARQ信息和所述参考信息;其中,所述参考信息包括所述第一终端设备与所述第二终端设备之间的信息,和/或,所述第一终端设备与网络设备之间的信息。In combination with the sixth aspect or any possible implementation of the sixth aspect, the feedback information includes hybrid automatic repeat request HARQ information, or the feedback information includes reference information, or the feedback information includes the HARQ information and the reference information; wherein the reference information includes information between the first terminal device and the second terminal device, and/or information between the first terminal device and a network device.
结合第六方面或第六方面的任一种可能的实现方式中,所述参考信息包括所述第一终端设备与所述第二终端设备之间的参考状态信息、参考信号接收功率、参考信号接收质量和所述第一终端设备与所述第二终端设备之间的路径损耗信息中的一项或多项。In combination with the sixth aspect or any possible implementation of the sixth aspect, the reference information includes one or more of reference state information between the first terminal device and the second terminal device, reference signal reception power, reference signal reception quality, and path loss information between the first terminal device and the second terminal device.
结合第六方面或第六方面的任一种可能的实现方式中,所述反馈信道的发射功率满足如下公式:In combination with the sixth aspect or any possible implementation manner of the sixth aspect, the transmit power of the feedback channel satisfies the following formula:
P2=f5(M1+M3)+min{PCMAX,f6(M1+M3)+PO+α×PL+Δ}P 2 =f 5 (M 1 +M 3 )+min{P CMAX ,f 6 (M 1 +M 3 )+P O +α×PL+Δ}
其中,所述P2为所述反馈信道的发射功率,所述PCMAX为所述最大发射功率,所述f5(M1+M3)和所述f6(M1+M3)分别为所述数据信道的带宽M1、所述反馈信道的带宽M3以及所述反馈信道与所述数据信道的功率差值的函数,所述PO为所述第二终端设备的目标接收功率,所述PL为路径损耗估计值,所述Δ为所述第二调整参数。Among them, the P2 is the transmission power of the feedback channel, the PCMAX is the maximum transmission power, the f5 ( M1 + M3 ) and the f6 ( M1 + M3 ) are respectively functions of the bandwidth M1 of the data channel, the bandwidth M3 of the feedback channel and the power difference between the feedback channel and the data channel, the PO is the target received power of the second terminal device, the PL is the path loss estimation value, and the Δ is the second adjustment parameter.
结合第六方面或第六方面的任一种可能的实现方式中,所述反馈信道的发射功率满足如下公式:In combination with the sixth aspect or any possible implementation manner of the sixth aspect, the transmit power of the feedback channel satisfies the following formula:
P2=f7(M2+M3)+min{PCMAX,f8(M2+M3)+PO+α×PL+Δ}P 2 =f 7 (M 2 +M 3 )+min{P CMAX ,f 8 (M 2 +M 3 )+P O +α×PL+Δ}
其中,所述P2为所述反馈信道的发射功率,所述PCMAX为所述最大发射功率,所述f7(M2+M3)和所述f8(M2+M3)分别为所述控制信道的带宽M2、所述反馈信道的带宽M3以及所述反馈信道与所述控制信道的功率差值的函数,所述PO为所述第二终端设备的目标接收功率,所述PL为路径损耗估计值,所述Δ为所述第二调整参数。Among them, the P2 is the transmission power of the feedback channel, the PCMAX is the maximum transmission power, the f7 ( M2 + M3 ) and the f8 ( M2 + M3 ) are respectively functions of the bandwidth M2 of the control channel, the bandwidth M3 of the feedback channel and the power difference between the feedback channel and the control channel, the PO is the target receiving power of the second terminal device, the PL is the path loss estimation value, and the Δ is the second adjustment parameter.
第七方面,本申请实施例提供了一种计算机可读存储介质,所述计算机可读存储介质中存储有指令,当其在计算机上运行时,使得计算机执行上述各方面所述的方法。In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, wherein instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium is run on a computer, the computer executes the methods described in the above aspects.
第八方面,本申请实施例提供了一种包括指令的计算机程序产品,当其在计算机上运行时,使得计算机执行上述各方面所述的方法。In an eighth aspect, an embodiment of the present application provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the methods described in the above aspects.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1a是本申请实施例提供的一种通信系统的示意图;FIG. 1a is a schematic diagram of a communication system provided by an embodiment of the present application;
图1b是本申请实施例提供的一种V2X的场景示意图;FIG1b is a schematic diagram of a V2X scenario provided in an embodiment of the present application;
图2是本申请实施例提供的一种时频资源的结构示意图;FIG2 is a schematic diagram of the structure of a time-frequency resource provided in an embodiment of the present application;
图3是本申请实施例提供的一种帧结构的示意图;FIG3 is a schematic diagram of a frame structure provided in an embodiment of the present application;
图4a是本申请实施例提供的一种侧行链路的场景示意图;FIG4a is a schematic diagram of a sidelink scenario provided by an embodiment of the present application;
图4b是本申请实施例提供的另一种侧行链路的场景示意图;FIG4b is a schematic diagram of another sidelink scenario provided by an embodiment of the present application;
图4c是本申请实施例提供的又一种侧行链路的场景示意图;FIG4c is a schematic diagram of another sidelink scenario provided by an embodiment of the present application;
图4d是本申请实施例提供的又一种侧行链路的场景示意图;FIG4d is a schematic diagram of another sidelink scenario provided by an embodiment of the present application;
图4e是本申请实施例提供的又一种侧行链路的场景示意图;FIG4e is a schematic diagram of another sidelink scenario provided by an embodiment of the present application;
图4f是本申请实施例提供的又一种侧行链路的场景示意图;FIG4f is a schematic diagram of another sidelink scenario provided by an embodiment of the present application;
图4g是本申请实施例提供的又一种侧行链路的场景示意图;FIG4g is a schematic diagram of another sidelink scenario provided in an embodiment of the present application;
图5是本申请实施例提供的一种功率控制方法的流程示意图;FIG5 is a schematic flow chart of a power control method provided in an embodiment of the present application;
图6是本申请实施例提供的另一种功率控制方法的流程示意图;FIG6 is a schematic flow chart of another power control method provided in an embodiment of the present application;
图7是本申请实施例提供的另一种帧结构的示意图;FIG7 is a schematic diagram of another frame structure provided in an embodiment of the present application;
图8是本申请实施例提供的又一种帧结构的示意图;FIG8 is a schematic diagram of another frame structure provided in an embodiment of the present application;
图9是本申请实施例提供的又一种帧结构的示意图;FIG9 is a schematic diagram of another frame structure provided in an embodiment of the present application;
图10是本申请实施例提供的一种功率控制装置的结构示意图;FIG10 is a schematic diagram of the structure of a power control device provided in an embodiment of the present application;
图11是本申请实施例提供的一种终端设备的结构示意图。FIG. 11 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application.
具体实施方式DETAILED DESCRIPTION
下面将结合本申请实施例中的附图对本申请实施例进行描述。The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.
本申请的说明书、权利要求书及附图中的术语“第一”和“第二”等是用于区别不同对象,而不是用于描述特定顺序。此外,术语“包括”和“具有”以及它们任何变形,意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元,而是可选地还包括没有列出的步骤或单元,或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。The terms "first" and "second" and the like in the specification, claims and drawings of this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.
应当理解,在本申请中,“至少一个(项)”是指一个或者多个,“多个”是指两个或两个以上,“至少两个(项)”是指两个或三个及三个以上,“和/或”,用于描述关联对象的关联关系,表示可以存在三种关系,例如,“A和/或B”可以表示:只存在A,只存在B以及同时存在A和B三种情况,其中A,B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达,是指这些项中的任意组合,包括单项(个)或复数项(个)的任意组合。例如,a,b或c中的至少一项(个),可以表示:a,b,c,“a和b”,“a和c”,“b和c”,或“a和b和c”,其中a,b,c可以是单个,也可以是多个。It should be understood that in the present application, "at least one (item)" means one or more, "more than one" means two or more, "at least two (items)" means two or three and more than three, and "and/or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and/or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character "/" generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.
本申请使用的通信系统可理解为无线蜂窝通信系统,又或者理解为基于蜂窝网络架构的无线通信系统。例如第五代移动通信(5th-generation,5G)系统以及下一代移动通信等等。图1a是本申请实施例提供的一种通信系统的示意图,本申请中的方案可适用于该通信系统。该通信系统可以包括至少一个网络设备,仅示出一个,如图中的下一代基站(thenext generation Node B,gNB);以及与该网络设备连接的一个或多个终端设备,如图中的终端设备1和终端设备2。The communication system used in this application can be understood as a wireless cellular communication system, or as a wireless communication system based on a cellular network architecture. For example, the fifth-generation mobile communication (5th-generation, 5G) system and the next generation of mobile communications, etc. Figure 1a is a schematic diagram of a communication system provided in an embodiment of the present application, and the scheme in this application can be applied to the communication system. The communication system may include at least one network device, only one of which is shown, such as the next generation base station (thenext generation Node B, gNB) in the figure; and one or more terminal devices connected to the network device, such as
其中,网络设备可以是能和终端设备通信的设备。网络设备可以是任意一种具有无线收发功能的设备,包括但不限于基站。例如,该基站可以为gNB,又或者该基站为未来通信系统中的基站。可选的,该网络设备还可以为无线局域网(wireless fidelity,WiFi)系统中的接入节点、无线中继节点、无线回传节点等。可选的,该网络设备还可以是云无线接入网络(cloud radio access network,CRAN)场景下的无线控制器。可选的,该网络设备还可以是可穿戴设备或车载设备等。可选的,该网络设备还可以是小站,传输节点(transmission reference point,TRP)等。当然本申请不限于此。Among them, the network device can be a device that can communicate with the terminal device. The network device can be any device with wireless transceiver functions, including but not limited to base stations. For example, the base station can be a gNB, or the base station can be a base station in a future communication system. Optionally, the network device can also be an access node, a wireless relay node, a wireless backhaul node, etc. in a wireless local area network (wireless fidelity, WiFi) system. Optionally, the network device can also be a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario. Optionally, the network device can also be a wearable device or a vehicle-mounted device, etc. Optionally, the network device can also be a small station, a transmission reference point (TRP), etc. Of course, the present application is not limited to this.
终端设备,也可称为用户设备(user equipment,UE)、终端等。终端设备是一种具有无线收发功能的设备,可以部署在陆地上,包括室内或室外、手持、穿戴或车载;也可以部署在水面上,如轮船上等;还可以部署在空中,例如部署在飞机、气球或卫星上等。终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtualreality,VR)终端设备、增强现实(augmented reality,AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等等。Terminal equipment, also known as user equipment (UE), terminal, etc. Terminal equipment is a device with wireless transceiver function, which can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water, such as on ships; it can also be deployed in the air, such as on airplanes, balloons or satellites. Terminal equipment can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc.
可理解,图1a所示的通信系统中,终端设备1和终端设备2也可以通过设备到设备(device to device,D2D)技术或车与任何事物通信(vehicle-to-everything,V2X)技术进行通信。It can be understood that in the communication system shown in Figure 1a,
进一步地,V2X具体又包括车与车通信(vehicle-to-vehicle,V2V)、车与人通信(vehicle-to-pedestrian,V2P)、车与基础设施的通信(vehicle to infrastructure,V2I)、车与网络的通信(vehicle to network,V2N)。如图1b所示,图1b示出了V2X的场景。其中,V2V指的是基于LTE的车辆间通信;V2P指的是基于LTE的车辆与人(包括行人、骑自行车的人、司机、或乘客)的通信;V2I指的是基于LTE的车辆与路边装置(road side unit,RSU)的通信,另外还有一种V2N可以包括在V2I中,V2N指的是基于LTE的车辆与基站/网络的通信。其中,路边装置包括两种类型:终端类型的RSU,由于布在路边,该终端类型的RSU处于非移动状态,不需要考虑移动性;基站类型的RSU,可以给与之通信的车辆提供定时同步及资源调度。Furthermore, V2X specifically includes vehicle-to-vehicle (V2V), vehicle-to-pedestrian (V2P), vehicle-to-infrastructure (V2I), and vehicle-to-network (V2N). As shown in Figure 1b, Figure 1b shows the V2X scenario. Among them, V2V refers to vehicle-to-vehicle communication based on LTE; V2P refers to the communication between vehicles and people (including pedestrians, cyclists, drivers, or passengers) based on LTE; V2I refers to the communication between vehicles and roadside units (RSU) based on LTE. In addition, there is a V2N that can be included in V2I. V2N refers to the communication between vehicles and base stations/networks based on LTE. Among them, roadside units include two types: terminal-type RSU. Since it is arranged on the roadside, the terminal-type RSU is in a non-mobile state and does not need to consider mobility; base station-type RSU can provide timing synchronization and resource scheduling for vehicles communicating with it.
作为示例,参见图2,图2是本申请实施例提供的一种时频资源的结构示意图,其中,一个资源单元(resource element,RE)在时域上为一个正交频分复用((orthogonalfrequency division multiplexing,OFDM)符号,频域上为一个子载波。在LTE系统中,时频资源被划分成时间域维度上的OFDM或单载波频分复用多址(single carrier frequencydivision multiplexing access,SC-FDMA)符号和频率域维度上的子载波,而最小的资源粒度叫做RE,即表示时间域上的一个时域符号和频率域上的一个子载波组成的时频格点。可理解,以上仅为本申请实施例提供的一种示例,在未来通信技术中,RE的结构可能会发生变化,因此,不应将图2所示的RE理解为对本申请实施例的限定。如在5G NR中,引入了多种子载波间隔,如子载波间隔可以是15kHz*2n,n是整数,从3.75,7.5直到480kHz等等。As an example, refer to Figure 2, which is a schematic diagram of the structure of a time-frequency resource provided in an embodiment of the present application, wherein a resource element (RE) is an orthogonal frequency division multiplexing (OFDM) symbol in the time domain and a subcarrier in the frequency domain. In the LTE system, the time-frequency resources are divided into OFDM or single carrier frequency division multiplexing access (SC-FDMA) symbols in the time domain dimension and subcarriers in the frequency domain dimension, and the smallest resource granularity is called RE, which represents a time-frequency grid consisting of a time domain symbol in the time domain and a subcarrier in the frequency domain. It can be understood that the above is only an example provided in an embodiment of the present application. In future communication technologies, the structure of RE may change. Therefore, the RE shown in Figure 2 should not be understood as a limitation on the embodiment of the present application. For example, in 5G NR, a variety of subcarrier spacings are introduced, such as the subcarrier spacing can be 15kHz* 2n , n is an integer from 3.75, 7.5 to 480kHz, and so on.
在3GPP的LTE系统中,LTE V2X中主要的业务类型为广播,且没有混合自动重传请求(hybrid automatic repeat request,HARQ)反馈,信道状态信息(channel stateinformation,CSI)反馈等。然而在NR V2X中的业务类型还包括单播和组播,以及还包括HARQ反馈,以及使用单独的物理侧行链路反馈信道(physical sidelink feedbackchannel,PSFCH)来承载侧行链路反馈控制信息(sidelink feedback controlinformation,SFCI)。In the 3GPP LTE system, the main service type in LTE V2X is broadcast, and there is no hybrid automatic repeat request (HARQ) feedback, channel state information (CSI) feedback, etc. However, the service types in NR V2X also include unicast and multicast, as well as HARQ feedback, and use a separate physical sidelink feedback channel (PSFCH) to carry sidelink feedback control information (SFCI).
具体的,如图3所示的帧结构,如图3中的3a和3b所示,物理侧行链路控制信道(physical sidelink control channel,PSCCH)与物理侧行链路共享信道(physicalsidelink shared channel,PSSCH)为时分复用(time division duplexing,TDM)。在LTE中,图3中的3a和3b所示的帧结构中,PSCCH与PSSCH的发送功率分别满足如下公式:Specifically, in the frame structure shown in FIG3 , as shown in 3a and 3b in FIG3 , the physical sidelink control channel (PSCCH) and the physical sidelink shared channel (PSSCH) are time division multiplexed (TDM). In LTE, in the frame structures shown in 3a and 3b in FIG3 , the transmission powers of PSCCH and PSSCH respectively satisfy the following formulas:
PPSSCH=min{PCMAX,PSSCH,10log10(MPSSCH)+PO_PSSCH,2+αPSSCH,2×PL} (1)P PSSCH =min{P CMAX,PSSCH ,10log 10 (M PSSCH )+P O_PSSCH,2 +α PSSCH,2 ×PL} (1)
PPSCCH=min{PCMAX,PSCCH,10log10(MPSCCH)+PO_PSCCH,2+αPSCCH,2×PL} (2)P PSCCH =min{P CMAX,PSCCH ,10log 10 (M PSCCH )+P O_PSCCH,2 +α PSCCH,2 ×PL} (2)
其中,PPSSCH为PSSCH的发送功率,PCMAX,PSSCH为该PSSCH的最大发送功率,MPSSCH为该PSSCH的带宽,PO_PSSCH,2为终端设备的目标接收功率,αPSSCH,2为基站配置的滤波参数,PL为基站与终端设备之间的路径损耗。Among them, P PSSCH is the transmit power of PSSCH, PCMAX,PSSCH is the maximum transmit power of PSSCH, M PSSCH is the bandwidth of PSSCH, PO_PSSCH,2 is the target receive power of the terminal device, α PSSCH,2 is the filter parameter configured by the base station, and PL is the path loss between the base station and the terminal device.
其中,PPSCCH为PSCCH的发送功率,PCMAX,PSCCH为该PSCCH的最大发送功率,MPSCCH为该PSCCH的带宽,PO_PSCCH,2为终端设备的目标接收功率,αPSCCH,2为基站配置的滤波参数,PL为基站与终端设备之间的路径损耗。Among them, P PSCCH is the transmit power of PSCCH, PCMAX,PSCCH is the maximum transmit power of PSCCH, M PSCCH is the bandwidth of PSCCH, PO_PSCCH,2 is the target receive power of the terminal device, α PSCCH,2 is the filter parameter configured by the base station, and PL is the path loss between the base station and the terminal device.
如图3中的3c所示,PSCCH与PSSCH为频分复用(frequency division duplexing,FDM)。在LTE中,图3中的3c所示的帧结构中,PSCCH与PSSCH的发送功率可分别满足如下公式:As shown in 3c of FIG3 , PSCCH and PSSCH are frequency division multiplexing (FDM). In LTE, in the frame structure shown in 3c of FIG3 , the transmission power of PSCCH and PSSCH can satisfy the following formulas respectively:
可选的,公式(3)还可作如下变形:Optionally, formula (3) can also be transformed as follows:
可选的,公式(5)还可作如下变形:Optionally, formula (5) can also be transformed as follows:
其中,PPSSCH为PSSCH的发送功率,PPSCCH为PSCCH的发送功率;MPSSCH为PSSCH的带宽,MPSCCH为PSCCH的带宽;PCMAX为终端设备的最大发射功率,也可理解为终端设备允许的最大发射功率。PL为终端设备的下行链路损耗,在通信系统中特别是时分双工(time divisionduplexing,TDD)系统中,一般认为上下行链路损耗是一致的,所以PL可用于表示终端设备到基站侧可能的链路损耗。PO_PSSCH_3为终端设备期望接收到的功率(也可理解为终端设备的目标接收功率),其中,3表示基站调度。αPSSCH,3为基站调度模式下配置的滤波参数。Among them, P PSSCH is the transmit power of PSSCH, P PSCCH is the transmit power of PSCCH; M PSSCH is the bandwidth of PSSCH, M PSCCH is the bandwidth of PSCCH; PCMAX is the maximum transmit power of the terminal device, which can also be understood as the maximum transmit power allowed by the terminal device. PL is the downlink loss of the terminal device. In the communication system, especially the time division duplexing (TDD) system, it is generally believed that the uplink and downlink losses are consistent, so PL can be used to indicate the possible link loss from the terminal device to the base station side. PO_PSSCH_3 is the power that the terminal device expects to receive (which can also be understood as the target receive power of the terminal device), where 3 represents the base station scheduling. α PSSCH,3 is the filter parameter configured in the base station scheduling mode.
如图3中的3d所示,PSCCH与PSSCH之间既有时域重叠,又有频域重叠。As shown in 3d of FIG. 3 , there is both time domain overlap and frequency domain overlap between the PSCCH and the PSSCH.
在图3所示的帧结构的基础上,NR V2X中,PSFCH也可能与PSCCH和PSSCH采用不同的复用方式,因此,本申请提供了一种功率控制方法,能够有效解决PSFCH与PSCCH和PSSCH之间的功率控制问题。具体的,可参考图5和图6所示的功率控制方法。Based on the frame structure shown in FIG3, in NR V2X, PSFCH may also use different multiplexing methods with PSCCH and PSSCH. Therefore, the present application provides a power control method that can effectively solve the power control problem between PSFCH, PSCCH and PSSCH. Specifically, refer to the power control method shown in FIG5 and FIG6.
以下将以NR-V2X中的终端设备1和终端设备2为例,来具体说明本申请实施例所提供的功率控制方法的通信场景。The following will take
如图4a至图4g所示,分别为本申请实施例提供的一种侧行链路(sidelink)通信的场景示意图。As shown in FIG. 4a to FIG. 4g, they are schematic diagrams of a sidelink communication scenario provided in an embodiment of the present application.
图4a所示的场景中终端设备1和终端设备2均处于小区覆盖范围外。In the scenario shown in FIG. 4 a , both
图4b所示的场景中终端设备1处于小区覆盖范围内,终端设备2处于小区覆盖范围外。In the scenario shown in FIG. 4 b ,
图4c所示的场景中终端设备1和终端设备2均处于同一个小区的覆盖范围内,且在一个公共陆地移动网络(public land mobile network,PLMN)中,如PLMN1。In the scenario shown in FIG. 4 c , both
图4d所示的场景中终端设备1和终端设备2在一个PLMN中如PLMN1,但处于不同的小区覆盖范围。In the scenario shown in FIG. 4 d ,
图4e所示的场景中终端设备1和终端设备2分别在不同的PLMN,不同的小区,且终端设备1和终端设备2分别处于两个小区的共同覆盖范围内。如终端设备1在PLMN1中,而终端设备2在PLMN2中。In the scenario shown in FIG4e ,
图4f所示的场景中终端设备1和终端设备2分别在不同的PLMN,不同的小区,且终端设备1处于两个小区的共同覆盖范围内,终端设备2处于服务小区的覆盖范围内。In the scenario shown in FIG. 4f ,
图4g所示的场景中终端设备1和终端设备2分别在不同的PLMN,不同的小区,且终端设备1和终端设备2分别处于各自的服务小区的覆盖范围内。In the scenario shown in FIG. 4g ,
可理解,以上所示的场景可适用于车联万物(vehicle-to-everything,V2X),也可称为V2X中。It can be understood that the scenario shown above is applicable to vehicle-to-everything (V2X), which can also be called V2X.
参见图5,图5是本申请实施例提供的一种功率控制方法的流程示意图,该功率控制方法可应用于图4a至图4g所示的终端设备,且该功率控制方法还可有效解决图3所示的功率控制问题,如图5所示,该功率控制方法包括:Referring to FIG. 5 , FIG. 5 is a schematic flow chart of a power control method provided in an embodiment of the present application. The power control method can be applied to the terminal devices shown in FIG. 4a to FIG. 4g , and the power control method can also effectively solve the power control problem shown in FIG. 3 . As shown in FIG. 5 , the power control method includes:
501、第一终端设备确定数据信道的发射功率;其中,上述数据信道中包括第一信息,上述第一信息包括反馈信息。501. A first terminal device determines a transmission power of a data channel; wherein the data channel includes first information, and the first information includes feedback information.
本申请实施例中,反馈信息可以与数据信道随路发送,如反馈信息可以采用打孔或速率匹配的方式在数据信道中传输。具体的,该反馈信息可以包括HARQ信息,该HARQ信息包括确认(acknowledgement,ACK)与否定确认(negative acknowledgement,NACK),ACK用于反馈成功接收数据,NACK用于反馈未成功接收。可选的,该反馈信息还可以包括参考信息,该参考信息可以包括第一终端设备与第二终端设备之间的信息,或者,该参考信息可以包括第一终端设备与网络设备之间的信息,或者,该参考信息还可以包括第一终端设备与第二终端设备之间的信息,以及第一终端设备与网络设备之间的信息。具体的,如参考信息可以包括以下任意一项或多项:第一终端设备与第二终端设备之间的参考状态信息如信道状态信息(channel state information,CSI);第一终端设备与第二终端设备之间的路径损耗信息;参考信号接收功率(reference signal received power,RSRP);参考信号接收质量(reference signal received quality,RSRQ)。当然,以上仅为一种示例,如参考信息还可包括与距离相关的信息,该与距离相关的信息可理解为第一终端设备与基站之间的距离,或者第一终端设备与第二终端设备之间的距离,或者第一终端设备可覆盖的通信距离,或者第一终端设备处于基站覆盖范围内的反馈。In an embodiment of the present application, feedback information can be sent along with the data channel, such as feedback information can be transmitted in the data channel by puncturing or rate matching. Specifically, the feedback information may include HARQ information, and the HARQ information includes acknowledgment (ACK) and negative acknowledgment (NACK), ACK is used to feedback successfully received data, and NACK is used to feedback unsuccessful reception. Optionally, the feedback information may also include reference information, and the reference information may include information between the first terminal device and the second terminal device, or the reference information may include information between the first terminal device and the network device, or the reference information may also include information between the first terminal device and the second terminal device, and information between the first terminal device and the network device. Specifically, the reference information may include any one or more of the following: reference state information such as channel state information (CSI) between the first terminal device and the second terminal device; path loss information between the first terminal device and the second terminal device; reference signal received power (RSRP); reference signal received quality (RSRQ). Of course, the above is only an example. For example, the reference information may also include information related to the distance. The information related to the distance can be understood as the distance between the first terminal device and the base station, or the distance between the first terminal device and the second terminal device, or the communication distance that the first terminal device can cover, or feedback that the first terminal device is within the coverage of the base station.
或者,该反馈信息还可既包括HARQ信息,又包括参考信息等等,本申请实施例对于该反馈信息具体包括哪些信息不作唯一性限定。Alternatively, the feedback information may also include both HARQ information and reference information, etc. The embodiment of the present application does not impose a unique limitation on what information the feedback information specifically includes.
可理解,本申请实施例中,该数据信道可理解为用来承载第一信息的信道,该第一信息可包括反馈信息,该反馈信息的具体描述可参考前述实施例,这里不再一一详述。可理解,该反馈信息具体还可称为侧行链路反馈控制信息(sidelink feedback controlinformation,SFCI)等等,本申请实施例对于该反馈信息的名称不作唯一性限定。进一步地,第一信息还可包括数据,即该数据信道还可理解为用来承载数据的信道,如该数据可为第一终端设备向第二终端设备发送的数据,进一步地,该数据可用于承载第一终端设备向第二终端设备发送的业务数据。例如,侧行链路中,该数据信道可以为物理侧行链路共享信道(physical sidelink shared channel,PSSCH)。It can be understood that in the embodiment of the present application, the data channel can be understood as a channel used to carry the first information, and the first information may include feedback information. The specific description of the feedback information can refer to the aforementioned embodiment, and will not be described in detail here. It can be understood that the feedback information can also be specifically called sidelink feedback control information (sidelink feedback control information, SFCI) and the like, and the embodiment of the present application does not make a unique limitation on the name of the feedback information. Furthermore, the first information may also include data, that is, the data channel can also be understood as a channel used to carry data, such as the data may be data sent by the first terminal device to the second terminal device, and further, the data can be used to carry the service data sent by the first terminal device to the second terminal device. For example, in the side link, the data channel can be a physical sidelink shared channel (physical sidelink shared channel, PSSCH).
可理解,至于第一终端设备确定数据信道的发射功率的具体方法,可参考以下实现方式,这里先不详述。It is understandable that as for the specific method for the first terminal device to determine the transmission power of the data channel, reference may be made to the following implementation method, which will not be described in detail here.
502、上述第一终端设备以上述数据信道的发射功率向第二终端设备发送上述反馈信息,上述第二终端设备接收来自上述第一终端设备的反馈信息。502. The first terminal device sends the feedback information to the second terminal device using the transmission power of the data channel, and the second terminal device receives the feedback information from the first terminal device.
本申请实施例中,第一终端设备可以以打孔的方式将反馈信息承载于数据信道中,或者,该第一终端设备还可以以速率匹配的方式将反馈信息承载于数据信道中,从而通过该数据信道发送反馈信息。In an embodiment of the present application, the first terminal device may carry the feedback information in a data channel by means of puncturing, or the first terminal device may also carry the feedback information in a data channel by means of rate matching, thereby sending the feedback information through the data channel.
本申请实施例中,在数据信道与反馈信道时频域资源重叠时,反馈信息可以与数据信道随路发送,由此本申请实施例对数据信道的发射功率进行了改进,使得在该情况下的数据信道的发射功率的分配更加准确。In an embodiment of the present application, when the time-frequency domain resources of the data channel and the feedback channel overlap, the feedback information can be sent along with the data channel. Therefore, the embodiment of the present application improves the transmission power of the data channel, making the allocation of the transmission power of the data channel in this case more accurate.
在图5所示的方法的基础上,以下将具体说明第一终端设备是如何确定数据信道的发射功率的。可理解,以下将以数据信道为PSSCH为例来说明该第一终端设备确定数据信道的发射功率的方法。Based on the method shown in Figure 5, the following will specifically describe how the first terminal device determines the transmit power of the data channel. It is understandable that the following will take the data channel as PSSCH as an example to describe the method for the first terminal device to determine the transmit power of the data channel.
在本申请的一些实施例中,数据信道的发射功率可根据最大发射功率、数据信道的带宽以及第一调整参数确定。In some embodiments of the present application, the transmit power of the data channel may be determined according to the maximum transmit power, the bandwidth of the data channel, and the first adjustment parameter.
如图3中的3a和3b,在该情况下,PSSCH的发射功率可满足如下公式:As shown in 3a and 3b of Figure 3, in this case, the transmit power of PSSCH can satisfy the following formula:
P1=min{PCMAX,f1(M1)+PO+α×PL+β} (7)P 1 =min{P CMAX ,f 1 (M 1 )+P O +α×PL+β} (7)
其中,P1为数据信道的发射功率,PCMAX为最大发射功率,f1(M1)为数据信道的带宽M1的函数,PO为第二终端设备的目标接收功率(也可理解为第一终端设备期望的接收功率),PL为路径损耗估计值,α路径损耗的补偿参数,可由高层信令配置,β为第一调整参数。具体的,PCMAX可理解为物理硬件受限的最大发射功率,或者,可理解为终端设备的硬件所能允许的最大发射功率。具体的,β可理解为反馈信息随路在PSSCH传输的HARQ、参考信息或HARQ与参考信息的比特数相关的参数。具体的,PL可以为第一终端设备与基站之间的路径损耗估计值,也可以为第一终端设备与第二终端设备之间的路径损耗估计值,本申请实施例对于该PL不作唯一性限定。可选的,该PL可为预定义的,作为示例,如第一终端设备在基站覆盖范围内,则该PL可为第一终端设备与基站之间的路径损耗估计值;而如第一终端设备在基站覆盖范围外,则该PL可为第一终端设备与第二终端设备之间的路径损耗估计值。又或者,该PL还可由高层信令或物理层信令配置等等,本申请实施例对于该PL的具体取值不作限定。Among them, P1 is the transmission power of the data channel, PCMAX is the maximum transmission power, f1 ( M1 ) is a function of the bandwidth M1 of the data channel, PO is the target receiving power of the second terminal device (it can also be understood as the expected receiving power of the first terminal device), PL is the path loss estimate, α is the compensation parameter of the path loss, which can be configured by high-level signaling, and β is the first adjustment parameter. Specifically, PCMAX can be understood as the maximum transmission power limited by the physical hardware, or it can be understood as the maximum transmission power allowed by the hardware of the terminal device. Specifically, β can be understood as a parameter related to the number of bits of HARQ, reference information, or HARQ and reference information transmitted along with the feedback information on the PSSCH. Specifically, PL can be the path loss estimate between the first terminal device and the base station, or it can be the path loss estimate between the first terminal device and the second terminal device. The embodiment of the present application does not make a unique limitation on the PL. Optionally, the PL may be predefined. For example, if the first terminal device is within the coverage of the base station, the PL may be an estimated value of the path loss between the first terminal device and the base station; and if the first terminal device is outside the coverage of the base station, the PL may be an estimated value of the path loss between the first terminal device and the second terminal device. Alternatively, the PL may also be configured by high-layer signaling or physical layer signaling, etc. The embodiment of the present application does not limit the specific value of the PL.
可理解,本申请实施例中,高层信令可包括无线资源控制(radio resourcecontrol,RRC)信令、媒体接入层控制元素(medium access control control element,MACCE)信令和系统信息块(system information block,SIB)信令等等,本申请实施例对于该高层信令具体为哪个不作限定。可选的,该高层信令可以为Uu链路下的高层信令,还可为侧行链路下的高层信令,又或者是未来其他链路下的高层信令等等,本申请实施例不作限定。It can be understood that in the embodiment of the present application, the high-level signaling may include radio resource control (RRC) signaling, medium access control element (MACCE) signaling and system information block (SIB) signaling, etc., and the embodiment of the present application does not limit which high-level signaling is. Optionally, the high-level signaling can be high-level signaling under the Uu link, high-level signaling under the side link, or high-level signaling under other links in the future, etc., which is not limited in the embodiment of the present application.
具体的,在反馈信息为SFCI的情况下,该PSSCH的发射功率可满足如下公式:Specifically, when the feedback information is SFCI, the transmit power of the PSSCH may satisfy the following formula:
PPSSCH=min{PCMAX,10log10(MPSSCH)+PO+α×PL+βSFCI} (8)P PSSCH =min{P CMAX ,10log 10 (M PSSCH )+P O +α×PL+β SFCI } (8)
在一些实施例中,对于公式(7)和公式(8)来说,第一调整参数β或βSFCI可根据第一子参数Ks和第二子参数BPRE(bits per resource element)确定,第一子参数为与调整与编码策略(modulation and coding scheme,MCS)相关的参数,第二子参数为与数据信道的资源单元(resource element,RE)数量以及编码块的大小相关的参数,或者,第二子参数为与数据信道的RE数量以及反馈信息的比特数相关的参数。可理解,对于公式(8)中的其他参数的具体描述可参考前述实施例,这里不再一一详述。In some embodiments, for formula (7) and formula (8), the first adjustment parameter β or β SFCI can be determined according to the first sub-parameter Ks and the second sub-parameter BPRE (bits per resource element), the first sub-parameter is a parameter related to the modulation and coding scheme (MCS), and the second sub-parameter is a parameter related to the number of resource elements (RE) of the data channel and the size of the coding block, or the second sub-parameter is a parameter related to the number of REs of the data channel and the number of bits of feedback information. It can be understood that the specific description of other parameters in formula (8) can refer to the aforementioned embodiments, and will not be described in detail here.
具体的,第一调整参数可满足如下公式:Specifically, the first adjustment parameter may satisfy the following formula:
βSFCI=10log10(2BPRE×Ks-1) (9)β SFCI =10log10(2 BPRE×Ks -1) (9)
其中,第一子参数Ks即为与MCS相关的调整参数,该第一子参数可由高层信令如无线资源控制(radio resource control,RRC)信令指示等等,本申请实施例不作限定。对于第二子参数BPRE来说,可满足如下公式:Among them, the first sub-parameter Ks is an adjustment parameter related to MCS, and the first sub-parameter may be indicated by a high-level signaling such as a radio resource control (RRC) signaling, etc., and is not limited in the embodiment of the present application. For the second sub-parameter BPRE, the following formula may be satisfied:
其中,Kr为编码块(code block,CB)的大小,r为码块索引,C为总的码块数,NRE为PSSCH的RE数。也就是说,该第二子参数为与数据信道占用的RE数量以及编码块的大小相关的参数。Wherein, Kr is the size of a code block (CB), r is a code block index, C is the total number of code blocks, and N RE is the number of REs of PSSCH. That is, the second sub-parameter is a parameter related to the number of REs occupied by the data channel and the size of the code block.
或者,对于第二子参数BPRE来说,可满足如下公式:Alternatively, for the second sub-parameter BPRE, the following formula may be satisfied:
其中,OCSI为反馈信息如CSI的比特数,可选的,该OCSI还可为反馈信息如CSI的比特数与循环冗余校验(cyclic redundancy check,CRC)的比特数的和。NRE为PSSCH的RE数。也就是说,该第二子参数还可为与数据信道占用的RE数量以及反馈信息的比特数相关的参数。Among them, O CSI is the number of bits of feedback information such as CSI. Optionally, the OCSI can also be the sum of the number of bits of feedback information such as CSI and the number of bits of cyclic redundancy check (CRC). N RE is the number of REs of PSSCH. That is, the second sub-parameter can also be a parameter related to the number of REs occupied by the data channel and the number of bits of feedback information.
可理解,公式(10)所示出的第二子参数还可理解为数据信道中同时传输反馈信息和数据时的参数。公式(11)所示出的第二子参数可理解为数据信道中仅传输反馈信息时的参数。It can be understood that the second sub-parameter shown in formula (10) can also be understood as a parameter when feedback information and data are transmitted simultaneously in the data channel. The second sub-parameter shown in formula (11) can be understood as a parameter when only feedback information is transmitted in the data channel.
可理解,公式(10)和公式(11)所示出的第二子参数仅为一种示例,在具体实现中,还可根据公式(10)和公式(11)作出任意变形,因此,不应将其理解为对本申请实施例的限定。It can be understood that the second sub-parameter shown in formula (10) and formula (11) is only an example. In a specific implementation, any deformation can be made according to formula (10) and formula (11). Therefore, it should not be understood as a limitation on the embodiments of the present application.
在一些实施例中,对于公式(7)和公式(8)来说,第一调整参数β或βSFCI还可根据第一子参数Ks、第二子参数BPRE以及第三子参数SFCIoffset确定,第一子参数为与调整与编码策略MCS相关的参数,第二子参数为与数据信道的资源单元RE数量以及编码块的大小相关的参数,或者,第二子参数为与数据信道的RE数量以及反馈信息的比特数相关的参数,第三子参数为与反馈信息的比特数相关的偏移参数。In some embodiments, for formula (7) and formula (8), the first adjustment parameter β or β SFCI can also be determined based on the first sub-parameter Ks, the second sub-parameter BPRE and the third sub-parameter SFCI offset , the first sub-parameter is a parameter related to the adjustment and coding strategy MCS, the second sub-parameter is a parameter related to the number of resource units RE of the data channel and the size of the coding block, or the second sub-parameter is a parameter related to the number of REs of the data channel and the number of bits of feedback information, and the third sub-parameter is an offset parameter related to the number of bits of the feedback information.
具体的,第一调整参数可满足如下公式:Specifically, the first adjustment parameter may satisfy the following formula:
βSFCI=10log10[(2BPRE×Ks-1)×SFCIoffset] (12)β SFCI =10log10[(2 BPRE×Ks -1)×SFCI offset ] (12)
其中,第一子参数Ks即为与MCS相关的调整参数,该第一子参数可由高层信令如无线资源控制(radio resource control,RRC)信令指示等等,本申请实施例不作限定。对于第二子参数BPRE来说,可参考公式(10)和公式(11)的具体描述,这里不再一一详述。Among them, the first sub-parameter Ks is an adjustment parameter related to MCS, and the first sub-parameter may be indicated by a high-level signaling such as a radio resource control (RRC) signaling, etc., and is not limited in the embodiment of the present application. For the second sub-parameter BPRE, please refer to the specific description of formula (10) and formula (11), which will not be described in detail here.
其中,对于第三子参数SFCIoffset在数据信道中同时传输反馈信息和数据时,该第三子参数的取值可以为1。而在数据信道中仅仅传输反馈信息时,该第三子参数可以为与反馈信息的比特数相关的偏移参数,例如,反馈信息的比特数越多,第三子参数的取值越大,或者,反馈信息的比特数对应的函数变化,第三子参数的变化趋势可以与反馈信息的比特数对应的函数相同或相反。Among them, when the third sub-parameter SFCI offset transmits feedback information and data simultaneously in the data channel, the value of the third sub-parameter may be 1. When only feedback information is transmitted in the data channel, the third sub-parameter may be an offset parameter related to the number of bits of the feedback information, for example, the more bits of the feedback information, the larger the value of the third sub-parameter, or the function corresponding to the number of bits of the feedback information changes, and the change trend of the third sub-parameter may be the same as or opposite to the function corresponding to the number of bits of the feedback information.
在本申请的一些实施例中,数据信道的发射功率根据最大发射功率、数据信道的带宽、控制信道的带宽以及第一调整参数确定。In some embodiments of the present application, the transmit power of the data channel is determined according to the maximum transmit power, the bandwidth of the data channel, the bandwidth of the control channel, and the first adjustment parameter.
在一些实施例中,如图3中的3c,在该情况下,数据信道的发射功率满足如下公式:In some embodiments, such as 3c in FIG. 3 , in this case, the transmit power of the data channel satisfies the following formula:
P1=f2(M1+M2)+min{PCMAX,f3(M1+M2)+PO+α×PL+β} (13)P 1 =f 2 (M 1 +M 2 )+min{P CMAX ,f 3 (M 1 +M 2 )+P O +α×PL+β} (13)
其中,P1为数据信道的发射功率,PCMAX为最大发射功率,f2(M1+M2)和f3(M1+M2)分别为数据信道的带宽M1和控制信道的带宽M2的函数,PO为第二终端设备的目标接收功率,PL为路径损耗估计值,α路径损耗的补偿参数,可由高层信令配置,β为第一调整参数。具体的,PCMAX可理解为物理硬件受限的最大发射功率,或者,可理解为终端设备的硬件所能允许的最大发射功率。具体的,β可理解为反馈信息随路在PSSCH传输的HARQ、参考信息或HARQ与参考信息的比特数相关的参数。可理解,对于PL的具体描述可参考公式(7)的描述,这里不再一一详述。Wherein, P1 is the transmission power of the data channel, PCMAX is the maximum transmission power, f2 ( M1 + M2 ) and f3 ( M1 + M2 ) are functions of the bandwidth M1 of the data channel and the bandwidth M2 of the control channel, respectively, PO is the target receiving power of the second terminal device, PL is the estimated value of the path loss, α is the compensation parameter of the path loss, which can be configured by high-level signaling, and β is the first adjustment parameter. Specifically, PCMAX can be understood as the maximum transmission power limited by the physical hardware, or it can be understood as the maximum transmission power allowed by the hardware of the terminal device. Specifically, β can be understood as a parameter related to the number of bits of HARQ, reference information, or HARQ and reference information transmitted along with the feedback information on the PSSCH. It can be understood that for the specific description of PL, reference can be made to the description of formula (7), which will not be described in detail here.
具体的,该PSSCH的发射功率可满足如下公式:Specifically, the transmit power of the PSSCH may satisfy the following formula:
可选的,公式(14)还可作如下变形:Optionally, formula (14) can also be transformed as follows:
其中,PSSCH为数据信道的发射功率,MPSSCH为数据信道的带宽,MPSCCH为控制信道的带宽。可理解,公式中其他参数的描述可参考前述公式描述,这里不再一一赘述。Wherein, P SSCH is the transmission power of the data channel, M PSSCH is the bandwidth of the data channel, and M PSCCH is the bandwidth of the control channel. It can be understood that the description of other parameters in the formula can refer to the description of the aforementioned formula, and will not be repeated here one by one.
具体的,对比公式(14)和公式(15)可知,公式(13)中f2(M1+M2)和f3(M1+M2)可分别满足如下公式:Specifically, by comparing formula (14) and formula (15), it can be seen that f 2 (M 1 +M 2 ) and f 3 (M 1 +M 2 ) in formula (13) can respectively satisfy the following formulas:
可理解,对于公式(13)、公式(14)和公式(15)中第一调整参数β或βSFCI的具体实施方式,可参考前述实施例的具体描述,如可参考公式(9)、公式(10)、公式(11)和公式(12)的具体描述,这里不再一一详述。It can be understood that for the specific implementation of the first adjustment parameter β or β SFCI in formula (13), formula (14) and formula (15), reference can be made to the specific description of the aforementioned embodiments, such as reference can be made to the specific description of formula (9), formula (10), formula (11) and formula (12), which will not be described in detail here.
在一些实施例中,如图3中的3d,在该情况下,数据信道的发射功率满足如下公式:In some embodiments, such as 3d in FIG. 3 , in this case, the transmit power of the data channel satisfies the following formula:
P1=min{PCMAX-f4(M1+M2),f3(M1+M2)+PO+α×PL+β} (18)P 1 =min{P CMAX -f 4 (M 1 +M 2 ),f 3 (M 1 +M 2 )+P O +α×PL+β} (18)
其中,P1为数据信道的发射功率,PCMAX为最大发射功率,f3(M1+M2)和f4(M1+M2)分别为数据信道的带宽M1和控制信道的带宽M2的函数,PO为第二终端设备的目标接收功率,PL为第一终端设备与第二终端设备之间的路径损耗估计值,β为第一调整参数。Among them, P1 is the transmission power of the data channel, PCMAX is the maximum transmission power, f3 ( M1 + M2 ) and f4 ( M1 + M2 ) are functions of the bandwidth M1 of the data channel and the bandwidth M2 of the control channel respectively, PO is the target receiving power of the second terminal device, PL is the estimated value of the path loss between the first terminal device and the second terminal device, and β is the first adjustment parameter.
具体的,该PSSCH的发射功率可满足如下公式:Specifically, the transmit power of the PSSCH may satisfy the following formula:
其中,PPSSCH_actual为实际的发射功率,即为根据功率的使用情况确定的PSSCH实际发射功率;PPSCCH为带宽为MPSSCH的情况下,PSSCH的发射功率。例如,对于图3的3d中,MPSSCH即为图3的3d中不包括PSCCH时,PSSCH的发射功率,即MPSSCH即为PSSCH的整个带宽,并不局限于除去PSCCH的带宽后的带宽。例如,该带宽可如图中所示出的箭头所代表的带宽。也就是说,该带宽可理解为图中不包括PSCCH时的带宽。可理解,本申请实施例中的其他公式中的MPSSCH所代表的含义不再一一详述。Among them, P PSSCH_actual is the actual transmission power, that is, the actual transmission power of PSSCH determined according to the power usage; P PSCCH is the transmission power of PSSCH when the bandwidth is M PSSCH . For example, for 3d of Figure 3, M PSSCH is the transmission power of PSSCH when PSCCH is not included in 3d of Figure 3, that is, M PSSCH is the entire bandwidth of PSSCH, and is not limited to the bandwidth after removing the bandwidth of PSCCH. For example, the bandwidth may be the bandwidth represented by the arrow shown in the figure. In other words, the bandwidth can be understood as the bandwidth when PSCCH is not included in the figure. It can be understood that the meaning represented by M PSSCH in other formulas in the embodiments of the present application will no longer be described in detail one by one.
具体的,f3(M1+M2)所满足的公式可参考公式(17)。Specifically, the formula satisfied by f 3 (M 1 +M 2 ) may refer to formula (17).
f4(M1+M2)可分别满足如下公式:f 4 (M 1 +M 2 ) can satisfy the following formulas:
可理解,对于公式(18)和公式(19)中第一调整参数β或βSFCI的具体实施方式,可参考前述实施例的具体描述,如可参考公式(9)、公式(10)、公式(11)和公式(12)的具体描述,这里不再一一详述。It can be understood that for the specific implementation of the first adjustment parameter β or β SFCI in formula (18) and formula (19), reference can be made to the specific description of the aforementioned embodiments, such as reference can be made to the specific description of formula (9), formula (10), formula (11) and formula (12), which will not be described in detail here.
可理解,以上所示的各个公式可能还有其它变形等等,因此,不应将本申请实施例中示出的公式理解为对本申请实施例的限定。It is understandable that the above-mentioned formulas may have other variations and the like. Therefore, the formulas shown in the embodiments of the present application should not be understood as limitations on the embodiments of the present application.
参见图6,图6是本申请实施例提供的另一种功率控制方法的流程示意图,该功率控制方法可应用于图4a至图4g所示的终端设备,且该功率控制方法还可有效解决图3所示的功率控制问题,如图6所示,该功率控制方法包括:Referring to FIG. 6 , FIG. 6 is a flow chart of another power control method provided in an embodiment of the present application. The power control method can be applied to the terminal devices shown in FIG. 4a to FIG. 4g , and the power control method can also effectively solve the power control problem shown in FIG. 3 . As shown in FIG. 6 , the power control method includes:
601、第一终端设备确定反馈信道的发射功率;其中,上述反馈信道与数据信道既有时域重叠,又有频域重叠,或者,上述反馈信道与上述数据信道有频域重叠且无时域重叠,或者,上述反馈信道与上述数据信道有时域重叠且无频域重叠。601. The first terminal device determines the transmission power of a feedback channel; wherein the feedback channel has both time domain overlap and frequency domain overlap with the data channel, or the feedback channel has frequency domain overlap and no time domain overlap with the data channel, or the feedback channel has time domain overlap and no frequency domain overlap with the data channel.
本申请实施例中,反馈信道单独存在,该反馈信道可用于承载反馈信息。该情况下,数据信道与反馈信道之间的帧结构关系可参考图7至图9所示的结构。如图7所示,在数据信道与控制信道属于时分复用关系时,即数据信道与控制信道有频域重叠时,反馈信道与数据信道之间既有时域重叠,又有频域重叠。如图8所示,数据信道与控制信道既有时域重叠,又有频域重叠时,反馈信道与数据信道之间既有时域重叠,又有频域重叠,且反馈信道与控制信道之间有不同的关系。如图9所示,数据信道与控制信道属于频分复用关系时,即数据信道与控制信道有时域重叠时,反馈信道与数据信道有频域重叠,属于时分复用关系。In an embodiment of the present application, the feedback channel exists alone, and the feedback channel can be used to carry feedback information. In this case, the frame structure relationship between the data channel and the feedback channel can refer to the structures shown in Figures 7 to 9. As shown in Figure 7, when the data channel and the control channel are in a time division multiplexing relationship, that is, when the data channel and the control channel have frequency domain overlap, there is both time domain overlap and frequency domain overlap between the feedback channel and the data channel. As shown in Figure 8, when the data channel and the control channel have both time domain overlap and frequency domain overlap, there is both time domain overlap and frequency domain overlap between the feedback channel and the data channel, and there is a different relationship between the feedback channel and the control channel. As shown in Figure 9, when the data channel and the control channel are in a frequency division multiplexing relationship, that is, when the data channel and the control channel have time domain overlap, the feedback channel and the data channel have frequency domain overlap, which belongs to a time division multiplexing relationship.
因此,本申请实施例将着重根据图7至图9所示的帧结构,来确定反馈信道的发射功率,具体的描述可参考以下实施例,这里先不详述。Therefore, the embodiments of the present application will focus on determining the transmission power of the feedback channel according to the frame structure shown in Figures 7 to 9. The specific description can be referred to the following embodiments, which will not be described in detail here.
602、上述第一终端设备以上述反馈信道的发射功率向第二终端设备发送反馈信息,上述第二终端设备接收来自上述第一终端设备的反馈信息。602. The first terminal device sends feedback information to the second terminal device using the transmission power of the feedback channel, and the second terminal device receives the feedback information from the first terminal device.
本申请实施例中,反馈信息可以包括HARQ信息,该HARQ信息包括确认(acknowledgement,ACK)与否定确认(negative acknowledgement,NACK),ACK用于反馈成功接收数据,NACK用于反馈未成功接收。可选的,该反馈信息还可以包括参考信息,该参考信息可以包括第一终端设备与第二终端设备之间的信息,或者,该参考信息可以包括第一终端设备与网络设备之间的信息,或者,该参考信息还可以包括第一终端设备与第二终端设备之间的信息,以及第一终端设备与网络设备之间的信息。具体的,如参考信息可以包括以下任意一项或多项:第一终端设备与第二终端设备之间的参考状态信息如信道状态信息(channel state information,CSI);第一终端设备与第二终端设备之间的路径损耗信息;参考信号接收功率(reference signal received power,RSRP);参考信号接收质量(reference signal received quality,RSRQ)。当然,以上仅为一种示例,如参考信息还可包括与距离相关的信息,该与距离相关的信息可理解为第一终端设备与基站之间的距离,或者第一终端设备与第二终端设备之间的距离,或者第一终端设备可覆盖的通信距离,或者第一终端设备处于基站覆盖范围内的反馈。In an embodiment of the present application, the feedback information may include HARQ information, and the HARQ information includes an acknowledgement (ACK) and a negative acknowledgement (NACK), ACK is used to feedback successfully received data, and NACK is used to feedback unsuccessfully received data. Optionally, the feedback information may also include reference information, and the reference information may include information between the first terminal device and the second terminal device, or the reference information may include information between the first terminal device and the network device, or the reference information may also include information between the first terminal device and the second terminal device, and information between the first terminal device and the network device. Specifically, the reference information may include any one or more of the following: reference state information between the first terminal device and the second terminal device, such as channel state information (CSI); path loss information between the first terminal device and the second terminal device; reference signal received power (RSRP); reference signal received quality (RSRQ). Of course, the above is only an example. For example, the reference information may also include information related to the distance. The information related to the distance can be understood as the distance between the first terminal device and the base station, or the distance between the first terminal device and the second terminal device, or the communication distance that the first terminal device can cover, or feedback that the first terminal device is within the coverage of the base station.
或者,该反馈信息还可既包括HARQ信息,又包括参考信息等等,本申请实施例对于该反馈信息具体包括哪些信息不作唯一性限定。Alternatively, the feedback information may also include both HARQ information and reference information, etc. The embodiment of the present application does not impose a unique limitation on what information the feedback information specifically includes.
可理解,本申请实施例中,控制信道可理解为用于承载侧行链路控制信息(sidelink control information,SCI)的信道,该SCI中可包括数据信道中传输的数据的解码信息等等。例如,在侧行链路中,该控制信道可以是物理侧行控制信道(physicalsidelink control channel,PSCCH)。It can be understood that in the embodiment of the present application, the control channel can be understood as a channel for carrying sidelink control information (SCI), and the SCI may include decoding information of data transmitted in the data channel, etc. For example, in the sidelink, the control channel can be a physical sidelink control channel (PSCCH).
本申请实施例中,反馈信道与数据信道之间的复用方式可以包括多种可能(即不同的帧结构),如反馈信道可能与数据信道既有时域重叠又有频域重叠,又如反馈信道可能与数据信道有频域重叠但无时域重叠,又如反馈信道可能与数据信道有时域重叠但无频域重叠,其中,不同的复用方式对应不同的发射功率,因此终端设备可根据多种可能中的一种可能来确定反馈信道的发射功率,避免了在所有的情况下,都采用一种方式来确定反馈信道的发射功率,从而有效提高了反馈信道发射功率确定的准确度,合理地对反馈信道发射功率进行控制。In an embodiment of the present application, the multiplexing method between the feedback channel and the data channel may include multiple possibilities (i.e., different frame structures), such as the feedback channel may have both time domain overlap and frequency domain overlap with the data channel, the feedback channel may have frequency domain overlap but no time domain overlap with the data channel, and the feedback channel may have time domain overlap but no frequency domain overlap with the data channel. Different multiplexing methods correspond to different transmit powers, so the terminal device can determine the transmit power of the feedback channel according to one of the multiple possibilities, avoiding the use of one method to determine the transmit power of the feedback channel in all cases, thereby effectively improving the accuracy of determining the transmit power of the feedback channel and reasonably controlling the transmit power of the feedback channel.
在图6所示的方法的基础上,以下将具体说明第一终端设备是如何确定反馈信道的发射功率的。可理解,以下将以数据信道为PSSCH、控制信道为PSCCH以及反馈信道为PSFCH为例来说明该第一终端设备确定反馈信道的发射功率的方法。Based on the method shown in Figure 6, the following will specifically describe how the first terminal device determines the transmit power of the feedback channel. It can be understood that the following will take the data channel as PSSCH, the control channel as PSCCH, and the feedback channel as PSFCH as an example to illustrate the method for the first terminal device to determine the transmit power of the feedback channel.
在本申请的一些实施例中,反馈信道的发射功率根据最大发送功率、反馈信道的带宽、数据信道的带宽、反馈信道与数据信道的功率差值以及第二调整参数确定。In some embodiments of the present application, the transmission power of the feedback channel is determined according to the maximum transmission power, the bandwidth of the feedback channel, the bandwidth of the data channel, the power difference between the feedback channel and the data channel, and the second adjustment parameter.
如图7中的7a和7b,在PSCCH与PSSCH采用TDM的情况下,PSFCH与PSSCH既有时域重叠,又有频域重叠,即数据信道与反馈信道是嵌入式复用方式,反馈信道在数据信道的区域内,即数据信道的时频域资源中包括反馈信道的时频域资源。在该情况下,反馈信道的发射功率满足如下公式:As shown in 7a and 7b in Figure 7, when PSCCH and PSSCH adopt TDM, PSFCH and PSSCH have both time domain overlap and frequency domain overlap, that is, the data channel and the feedback channel are embedded multiplexed, and the feedback channel is in the area of the data channel, that is, the time-frequency domain resources of the data channel include the time-frequency domain resources of the feedback channel. In this case, the transmission power of the feedback channel satisfies the following formula:
P2=f5(M1+M3)+min{PCMAX,f6(M1+M3)+PO+α×PL+Δ} (21)P 2 =f 5 (M 1 +M 3 )+min{P CMAX ,f 6 (M 1 +M 3 )+P O +α×PL+Δ} (21)
其中,P2为反馈信道的发射功率,PCMAX为最大发射功率,f5(M1+M3)和f6(M1+M3)分别为数据信道的带宽M1、反馈信道的带宽M3以及反馈信道与数据信道的功率差值(公式中未示出)的函数,PO为第二终端设备的目标接收功率,α为路径损耗的补偿参数,可由高层信令配置,PL为路径损耗估计值,Δ为第二调整参数。具体的,PL可以为第一终端设备与基站之间的路径损耗估计值,也可以为第一终端设备与第二终端设备之间的路径损耗估计值,本申请实施例对于该PL不作唯一性限定。可选的,该PL可为预定义的,作为示例,如第一终端设备在基站覆盖范围内,则该PL可为第一终端设备与基站之间的路径损耗估计值;而如第一终端设备在基站覆盖范围外,则该PL可为第一终端设备与第二终端设备之间的路径损耗估计值。又或者,该PL还可由高层信令或物理层信令配置等等,本申请实施例对于该PL的具体取值不作限定。Wherein, P2 is the transmission power of the feedback channel, PCMAX is the maximum transmission power, f5 ( M1 + M3 ) and f6 ( M1 + M3 ) are respectively functions of the bandwidth M1 of the data channel, the bandwidth M3 of the feedback channel, and the power difference between the feedback channel and the data channel (not shown in the formula), PO is the target receiving power of the second terminal device, α is the compensation parameter of the path loss, which can be configured by high-level signaling, PL is the path loss estimation value, and Δ is the second adjustment parameter. Specifically, PL can be the path loss estimation value between the first terminal device and the base station, or the path loss estimation value between the first terminal device and the second terminal device. The embodiment of the present application does not make a unique limitation on the PL. Optionally, the PL can be predefined. As an example, if the first terminal device is within the coverage of the base station, the PL can be the path loss estimation value between the first terminal device and the base station; and if the first terminal device is outside the coverage of the base station, the PL can be the path loss estimation value between the first terminal device and the second terminal device. Alternatively, the PL may also be configured by high-layer signaling or physical layer signaling, etc. The embodiment of the present application does not limit the specific value of the PL.
具体的,反馈信道的发射功率可满足如下公式:Specifically, the transmission power of the feedback channel can satisfy the following formula:
其中,PPSFCH为反馈信道的发射功率,x为反馈信道与数据信道的功率差值,MPSFCH为反馈信道的带宽,MPSSCH为数据信道的带宽,MPSCCH为控制信道的带宽,Δformat为第二调整参数。其他参数的描述可参考公式(21)的具体描述。可理解,公式(22)还可依据公式(3)与公式(5)的变形方法来变形,不应将公式(22)理解为对本申请实施例的限定。Wherein, P PSFCH is the transmission power of the feedback channel, x is the power difference between the feedback channel and the data channel, MPSFCH is the bandwidth of the feedback channel, MPSSCH is the bandwidth of the data channel, MPSCCH is the bandwidth of the control channel, and Δ format is the second adjustment parameter. The description of other parameters can refer to the specific description of formula (21). It can be understood that formula (22) can also be deformed according to the deformation method of formula (3) and formula (5), and formula (22) should not be understood as a limitation on the embodiments of the present application.
由此,f5(M1+M3)和f6(M1+M3)可分别满足如下公式:Therefore, f 5 (M 1 +M 3 ) and f 6 (M 1 +M 3 ) can satisfy the following formulas respectively:
f6(M1+M3)=10log10(MPSSCH+10x×MPSFCH) (24)f 6 (M 1 +M 3 )=10log 10 (M PSSCH +10 x ×M PSFCH ) (24)
对于公式(21)和公式(22)来说,第二调整参数Δ或Δformat可由高层信令配置,或者,第二调整参数为预定义的。For formula (21) and formula (22), the second adjustment parameter Δ or Δ format may be configured by high-layer signaling, or the second adjustment parameter may be predefined.
可理解,由于反馈信息中可包括HARQ、参考信息或HARQ和参考信息,因此,如反馈信息中包括HARQ,则第二调整参数可与HARQ的比特数相关,如反馈信息中包括参考信息,则第二调整参数可与参考信息的比特数相关等等。可理解,对于反馈信息中包括信息的具体实施方式,可参考前述实施例,这里不再一一详述。可理解,该第二调整参数不仅可与反馈信息的比特数相关,该第二调整参数还可与反馈信息中包括的内容相关。如对于不同的反馈信息,该第二调整参数的取值也可不同。也就是说,该第二调整参数不仅可与反馈信息中所包括的信息相关,还可与该反馈信息中所包括的信息的比特数相关。如可通过高层信令来指示第二调整参数,或者,还可通过不同的反馈信息或反馈信息中包括的信息的比特数来预定义该第二调整参数。It is understandable that, since the feedback information may include HARQ, reference information, or HARQ and reference information, if the feedback information includes HARQ, the second adjustment parameter may be related to the number of bits of HARQ, if the feedback information includes reference information, the second adjustment parameter may be related to the number of bits of the reference information, and so on. It is understandable that for the specific implementation of including information in the feedback information, reference may be made to the aforementioned embodiments, which will not be described in detail here. It is understandable that the second adjustment parameter may not only be related to the number of bits of the feedback information, but also to the content included in the feedback information. For example, the value of the second adjustment parameter may be different for different feedback information. In other words, the second adjustment parameter may not only be related to the information included in the feedback information, but also to the number of bits of the information included in the feedback information. For example, the second adjustment parameter may be indicated by high-level signaling, or the second adjustment parameter may be predefined by different feedback information or the number of bits of the information included in the feedback information.
可选的,第二调整参数还可与反馈信息的比特数以及反馈信道的资源元素RE数量相关。第二调整参数可满足如下公式:Optionally, the second adjustment parameter may also be related to the number of bits of the feedback information and the number of resource elements RE of the feedback channel. The second adjustment parameter may satisfy the following formula:
Δformat=10log10(2BPRE×K-1) (25)Δ format =10log10(2 BPRE×K -1) (25)
其中,K为功率调整因子,例如不同的反馈信息可对应不同的K,如K可通过高层信令指示。其中,BPRE=OSFCI/NRE,其中,OSFCI为反馈信息如HARQ的比特数,又如参考信息CSI的比特数,又如参考信息所包括的其他信息的比特数,又如HARQ与CRC的比特数,CSI与CRC的比特数等等,NRE是PSFCH占用的RE数。Wherein, K is a power adjustment factor, for example, different feedback information may correspond to different K, such as K may be indicated by high-layer signaling. Wherein, BPRE = O SFCI /N RE , where O SFCI is the number of bits of feedback information such as HARQ, the number of bits of reference information CSI, the number of bits of other information included in the reference information, the number of bits of HARQ and CRC, the number of bits of CSI and CRC, etc., and N RE is the number of REs occupied by PSFCH.
进一步的,该第二调整参数还可与不同模式相关,如在基站调度模式下和竞争模式下,该第二调整参数可不同。又或者,第二调整参数还可依据不同的传输链路而不同,如该第二调整参数在基站与终端设备的链路中可不同于终端设备与终端设备的链路中。可理解,该第二调整参数的取值还可与模式无关,或与传输链路无关等,本申请实施例不作限定。Furthermore, the second adjustment parameter may also be related to different modes, such as in base station scheduling mode and in contention mode, the second adjustment parameter may be different. Alternatively, the second adjustment parameter may also be different according to different transmission links, such as the second adjustment parameter in the link between the base station and the terminal device may be different from the link between the terminal device and the terminal device. It is understandable that the value of the second adjustment parameter may also be independent of the mode, or independent of the transmission link, etc., which is not limited in the embodiments of the present application.
对于公式(21)至公式(24)来说,反馈信道与数据信道的功率差值x为预定义的,或者,反馈信道与数据信道的功率差值x由控制信息指示;或者,反馈信道与数据信道的功率差值x由高层信令配置等等,本申请实施例对于该x如何设置不作限定。具体的,如x为预定义时,该x可与不同的帧结构关联,可根据图7至图9所示的不同帧结构而不同。又如x可由SCI通过1bit或2bits来动态指示等等。可理解,该x的取值可为正数,也可以为负数,又可为0。For formula (21) to formula (24), the power difference x between the feedback channel and the data channel is predefined, or the power difference x between the feedback channel and the data channel is indicated by control information; or the power difference x between the feedback channel and the data channel is configured by high-level signaling, etc. The embodiment of the present application does not limit how to set x. Specifically, if x is predefined, x can be associated with different frame structures, which can be different according to the different frame structures shown in Figures 7 to 9. For example, x can be dynamically indicated by SCI through 1 bit or 2 bits, etc. It can be understood that the value of x can be a positive number, a negative number, or 0.
本申请实施例中,在图7所示的帧结构中,通过设置反馈信道与数据信道之间的功率差值,可有利于反馈信道的解调。如反馈信道的发射功率高于数据信道的发射功率,则能够有效提高反馈信道的解调效率与准确性。In the embodiment of the present application, in the frame structure shown in Figure 7, by setting the power difference between the feedback channel and the data channel, it is beneficial to demodulate the feedback channel. If the transmission power of the feedback channel is higher than the transmission power of the data channel, the demodulation efficiency and accuracy of the feedback channel can be effectively improved.
可理解,在图7所示的帧结构中,至于数据信道与控制信道的发射功率所满足的公式,可参考图3中所示的公式,本申请实施例对于图7所示的数据信道与控制信道的发射功率所满足的公式或条件不作限定。It can be understood that in the frame structure shown in Figure 7, as for the formula satisfied by the transmission power of the data channel and the control channel, reference can be made to the formula shown in Figure 3. The embodiment of the present application does not limit the formula or conditions satisfied by the transmission power of the data channel and the control channel shown in Figure 7.
在一些实施例中,如图8中的8a,由于PSFCH与PSSCH既有时域重叠,又有频域重叠,且与图7所示的帧结构相同,因此,对于图8的8a中的PSFCH所满足的公式可参考图7的具体实施方式,这里不再一一详述。其中,图8的8a中数据信道与反馈信道的功率差值是否与图7中数据信道与反馈信道的功率差值相同,本申请实施例不作限定。也就是说,对于相同的参数,在不同图中,可能取不同的值。In some embodiments, such as 8a in FIG8 , since PSFCH and PSSCH have both time domain overlap and frequency domain overlap, and are the same as the frame structure shown in FIG7 , the formula satisfied by PSFCH in 8a in FIG8 can refer to the specific implementation of FIG7 , and will not be described in detail here. Among them, whether the power difference between the data channel and the feedback channel in 8a in FIG8 is the same as the power difference between the data channel and the feedback channel in FIG7 is not limited in the embodiment of the present application. In other words, for the same parameter, different values may be taken in different figures.
可理解,图8中的8a中PSSCH的发射功率由于需要考虑PSFCH与PSCCH与PSSCH重叠的部分,因此,图8的8a中PSSCH的发射功率可满足如下公式:It can be understood that the transmit power of the PSSCH in 8a of FIG. 8 needs to take into account the overlapping portion of the PSFCH, the PSCCH and the PSSCH. Therefore, the transmit power of the PSSCH in 8a of FIG. 8 can satisfy the following formula:
可选的,该PSSCH的发射功率也可满足如下公式:Optionally, the transmit power of the PSSCH may also satisfy the following formula:
可理解,对于公式(26)和公式(27)中参数的具体实施方式,可参考前述实施方式,这里不再一一详述。如对于公式(26)和公式(27)中的MPSSCH来说,该带宽代表的即为图8的8a中整个PSSCH的带宽,即图中不包括PSCCH与PSFCH时,PSSCH的带宽。例如该带宽可为图中箭头所示的带宽。又如公式中的PPSSCH_actual可为PSSCH的实际发射功率,即根据功率的使用情况所确定的PSSCH的实际发射功率等等。It can be understood that for the specific implementation of the parameters in formula (26) and formula (27), reference can be made to the aforementioned implementation, and no further details will be given here. For example, for M PSSCH in formula (26) and formula (27), the bandwidth represents the bandwidth of the entire PSSCH in 8a of Figure 8, that is, the bandwidth of the PSSCH when the figure does not include PSCCH and PSFCH. For example, the bandwidth can be the bandwidth indicated by the arrow in the figure. For example, P PSSCH_actual in the formula can be the actual transmission power of the PSSCH, that is, the actual transmission power of the PSSCH determined according to the power usage, etc.
对于图8中的8b,在本申请的一些实施例中,反馈信道的发射功率还可根据最大发射功率、反馈信道的带宽、控制信道的带宽、反馈信道与控制信道的功率差值以及第二调整参数确定。For 8b in Figure 8, in some embodiments of the present application, the transmission power of the feedback channel can also be determined based on the maximum transmission power, the bandwidth of the feedback channel, the bandwidth of the control channel, the power difference between the feedback channel and the control channel, and the second adjustment parameter.
如图8中的8b所示,PSFCH的时频域资源与PSSCH的时频域资源重叠,且PSCCH与PSFCH的时域资源重叠,属于频分复用。因此,根据PSFCH、PSCCH以及PSSCH的复用优先级规则,如PSCCH>PSFCH>PSSCH,由此可采用不同的功率差值(power boosting)。且由于PSFCH与PSCCH之间的复用关系,因此可以考虑PSFCH与PSCCH之间的功率差值y。可理解,该情况下,PSFCH与PSSCH之间也可以有功率差值x,对于该情况可参考前述实施方式,这里不再一一详述。As shown in 8b of Figure 8, the time-frequency domain resources of PSFCH overlap with the time-frequency domain resources of PSSCH, and the time-domain resources of PSCCH overlap with those of PSFCH, which belongs to frequency division multiplexing. Therefore, according to the multiplexing priority rules of PSFCH, PSCCH and PSSCH, such as PSCCH>PSFCH>PSSCH, different power differences (power boosting) can be adopted. And due to the multiplexing relationship between PSFCH and PSCCH, the power difference y between PSFCH and PSCCH can be considered. It can be understood that in this case, there can also be a power difference x between PSFCH and PSSCH. For this situation, reference can be made to the aforementioned implementation method, which will not be described in detail here.
因此,反馈信道的发射功率满足如下公式:Therefore, the transmission power of the feedback channel satisfies the following formula:
P2=f7(M2+M3)+min{PCMAX,f8(M2+M3)+PO+α×PL+Δ} (28)P 2 =f 7 (M 2 +M 3 )+min{P CMAX ,f 8 (M 2 +M 3 )+P O +α×PL+Δ} (28)
其中,P2为反馈信道的发射功率,PCMAX为最大发射功率,f7(M2+M3)和f8(M2+M3)分别为控制信道的带宽M2、反馈信道的带宽M3以及反馈信道与控制信道的功率差值的函数,PO为第二终端设备的目标接收功率,PL为路径损耗估计值,Δ为第二调整参数。Among them, P2 is the transmission power of the feedback channel, PCMAX is the maximum transmission power, f7 ( M2 + M3 ) and f8 ( M2 + M3 ) are functions of the bandwidth M2 of the control channel, the bandwidth M3 of the feedback channel and the power difference between the feedback channel and the control channel, PO is the target receiving power of the second terminal device, PL is the path loss estimation value, and Δ is the second adjustment parameter.
具体的,反馈信道的发射功率可满足如下公式:Specifically, the transmission power of the feedback channel can satisfy the following formula:
其中,反馈信道与控制信道的功率差值y为预定义的,或者,反馈信道与控制信道的功率差值y由控制信息指示;或者,反馈信道与控制信道的功率差值y由高层信令配置。可理解,对于公式(28)和公式(29)中相关参数的具体实施方式,可参考前述实施例的实施方式,这里不再一一详述。The power difference y between the feedback channel and the control channel is predefined, or the power difference y between the feedback channel and the control channel is indicated by control information; or the power difference y between the feedback channel and the control channel is configured by high-level signaling. It can be understood that for the specific implementation of the relevant parameters in formula (28) and formula (29), reference can be made to the implementation of the aforementioned embodiment, and no further details are given here.
进一步地,该情况下,PSSCH的发射功率可满足如下公式:Furthermore, in this case, the transmit power of PSSCH can satisfy the following formula:
可选的,PSSCH的发射功率还可满足如下公式:Optionally, the transmit power of PSSCH may also satisfy the following formula:
可理解,对于公式(30)和公式(31)中相关参数的具体实施方式,可参考前述实施例的实施方式,这里不再一一详述。It can be understood that for the specific implementation of the relevant parameters in formula (30) and formula (31), reference can be made to the implementation of the aforementioned embodiment, and no further details will be given here.
在一些实施例中,如图9中的9a,由于PSFCH与PSCCH采用频分复用,因此可通过PSCCH与PSFCH之间的功率差值,来确定PSFCH的发射功率。由此,图9中的9a中的PSFCH所满足的公式可参考图8中的8b所示的公式(28)和公式(29)的具体实施方式,这里不再一一详述。以及图9中的9b中的PSFCH所满足的公式也可参考图8中的8b所示的公式(28)和公式(29)的具体实施方式。可理解,尽管图9中PSCCH与PSFCH之间也有功率差值,但是图9中PSCCH与PSFCH之间的功率差值是否与图8中的PSCCH与PSFCH之间的功率差值相同,本申请实施例不作限定。In some embodiments, as shown in 9a of FIG. 9 , since PSFCH and PSCCH use frequency division multiplexing, the transmit power of PSFCH can be determined by the power difference between PSCCH and PSFCH. Therefore, the formula satisfied by PSFCH in 9a of FIG. 9 can refer to the specific implementation of formula (28) and formula (29) shown in 8b of FIG. 8 , which will not be described in detail here. And the formula satisfied by PSFCH in 9b of FIG. 9 can also refer to the specific implementation of formula (28) and formula (29) shown in 8b of FIG. 8 . It can be understood that although there is also a power difference between PSCCH and PSFCH in FIG. 9 , whether the power difference between PSCCH and PSFCH in FIG. 9 is the same as the power difference between PSCCH and PSFCH in FIG. 8 is not limited in the embodiments of the present application.
进一步地,图9中的9b,PSSCH的发射功率可满足如下公式:Further, in 9b of FIG. 9 , the transmit power of the PSSCH may satisfy the following formula:
可选的,PSSCH的发射功率还可满足如下公式:Optionally, the transmit power of PSSCH may also satisfy the following formula:
其中,公式(32)和公式(33)中的z为PSFCH与PSSCH的功率差值。Among them, z in formula (32) and formula (33) is the power difference between PSFCH and PSSCH.
可理解,对于公式(32)和公式(33)中相关参数的具体实施方式,可参考前述实施例的实施方式,这里不再一一详述。It can be understood that for the specific implementation of the relevant parameters in formula (32) and formula (33), reference can be made to the implementation of the aforementioned embodiments, and they will not be described in detail here.
可理解,以上各个公式中尽管有些参数表示相同,但是在具体实现中,不同的帧结构即对应图7至图9所示的结构,相同的参数也可能取值不同。如图7与图8中的x可能取值不同,以及图8与图9中的y取值不同等等,这里不再一一列出。It can be understood that although some parameters in the above formulas are the same, in specific implementations, different frame structures, i.e., structures corresponding to FIG7 to FIG9, may have different values for the same parameters. For example, x in FIG7 and FIG8 may have different values, and y in FIG8 and FIG9 may have different values, etc., which are not listed here one by one.
可理解,以上各个实施例各有侧重,因此一个实施例中未详尽描述的实施方式,可参考其他实施例中的实施方式。It can be understood that each of the above embodiments has its own focus, so the implementation method that is not fully described in one embodiment can refer to the implementation method in other embodiments.
需要说明的是,本申请所示出的各个实施例中的公式的单位未详细说明,可理解前述各个实施例中各个信道的发射功率的单位为dBm。It should be noted that the units of the formulas in the various embodiments shown in the present application are not described in detail. It can be understood that the unit of the transmission power of each channel in the aforementioned embodiments is dBm.
需要说明的是,本申请所示出的各个实施例中的带宽如PSSCH的带宽,PSCCH的带宽以及PSFCH的带宽的单位可为资源块(resource block,RB)的个数。即上述各个实施例中带宽可用RB的数量来表示。It should be noted that the bandwidth in each embodiment shown in the present application, such as the bandwidth of PSSCH, the bandwidth of PSCCH and the bandwidth of PSFCH, can be expressed in the number of resource blocks (RBs). That is, the bandwidth in each embodiment can be expressed in terms of the number of RBs.
以下将详细介绍本申请实施例提供的功率控制装置,该装置可用于执行本申请实施例所描述的方法,该装置可以是终端设备(如第一终端设备),或者是终端设备中实现上述功能的部件,或者是芯片。The power control device provided in the embodiment of the present application will be introduced in detail below. The device can be used to execute the method described in the embodiment of the present application. The device can be a terminal device (such as a first terminal device), or a component in the terminal device that implements the above functions, or a chip.
参见图10,图10是本申请实施例提供的一种功率控制装置的结构示意图,该功率控制装置可用于执行本申请实施例所描述的方法,如图10所示,该功率控制装置包括:Referring to FIG. 10 , FIG. 10 is a schematic diagram of the structure of a power control device provided in an embodiment of the present application. The power control device may be used to execute the method described in the embodiment of the present application. As shown in FIG. 10 , the power control device includes:
处理单元1001,用于确定数据信道的发射功率;其中,上述数据信道中包括第一信息,上述第一信息包括反馈信息;The
发送单元1002,用于以上述数据信道的发射功率向第二终端设备发送上述反馈信息。The sending
本申请实施例中,在数据信道与反馈信道时频域资源重叠时,反馈信息可以与数据信道随路发送,由此本申请实施例对数据信道的发射功率进行了改进,使得在该情况下的数据信道的发射功率的分配更加准确。In an embodiment of the present application, when the time-frequency domain resources of the data channel and the feedback channel overlap, the feedback information can be sent along with the data channel. Therefore, the embodiment of the present application improves the transmission power of the data channel, making the allocation of the transmission power of the data channel in this case more accurate.
在一种可能的实现方式中,上述数据信道的发射功率根据最大发射功率、上述数据信道的带宽以及第一调整参数确定;In a possible implementation manner, the transmit power of the data channel is determined according to the maximum transmit power, the bandwidth of the data channel and the first adjustment parameter;
或者,上述数据信道的发射功率根据上述最大发射功率、上述数据信道的带宽、控制信道的带宽以及上述第一调整参数确定。Alternatively, the transmit power of the data channel is determined according to the maximum transmit power, the bandwidth of the data channel, the bandwidth of the control channel and the first adjustment parameter.
在一种可能的实现方式中,上述第一调整参数根据第一子参数和第二子参数确定,上述第一子参数为与调整与编码策略MCS相关的参数,上述第二子参数为与上述数据信道的资源单元RE数量以及编码块的大小相关的参数,或者,上述第二子参数为与上述数据信道的RE数量以及上述反馈信息的比特数相关的参数。In a possible implementation, the first adjustment parameter is determined based on a first sub-parameter and a second sub-parameter, the first sub-parameter is a parameter related to the adjustment and coding strategy MCS, the second sub-parameter is a parameter related to the number of resource units RE of the data channel and the size of the coding block, or the second sub-parameter is a parameter related to the number of REs of the data channel and the number of bits of the feedback information.
在一种可能的实现方式中,上述第一调整参数根据第一子参数、第二子参数以及第三子参数确定,上述第一子参数为与调整与编码策略MCS相关的参数,上述第二子参数为与上述数据信道的资源单元RE数量以及编码块的大小相关的参数,或者,上述第二子参数为与上述数据信道的RE数量以及上述反馈信息的比特数相关的参数,上述第三子参数为与上述反馈信息的比特数相关的偏移参数。In a possible implementation, the first adjustment parameter is determined according to a first sub-parameter, a second sub-parameter and a third sub-parameter, the first sub-parameter is a parameter related to the adjustment and coding strategy MCS, the second sub-parameter is a parameter related to the number of resource units RE of the data channel and the size of the coding block, or the second sub-parameter is a parameter related to the number of REs of the data channel and the number of bits of the feedback information, and the third sub-parameter is an offset parameter related to the number of bits of the feedback information.
在一种可能的实现方式中,上述反馈信息中包括混合自动重传请求HARQ信息,或者,上述反馈信息中包括参考信息,或者,上述反馈信息中包括上述HARQ信息和上述参考信息;其中,上述参考信息包括上述第一终端设备与上述第二终端设备之间的信息,和/或,上述第一终端设备与网络设备之间的信息。In a possible implementation, the feedback information includes hybrid automatic repeat request HARQ information, or the feedback information includes reference information, or the feedback information includes the HARQ information and the reference information; wherein the reference information includes information between the first terminal device and the second terminal device, and/or information between the first terminal device and the network device.
在一种可能的实现方式中,上述参考信息包括上述第一终端设备与上述第二终端设备之间的参考状态信息、参考信号接收功率、参考信号接收质量和上述第一终端设备与上述第二终端设备之间的路径损耗信息中的一项或多项。In a possible implementation, the reference information includes one or more of reference state information between the first terminal device and the second terminal device, reference signal reception power, reference signal reception quality, and path loss information between the first terminal device and the second terminal device.
在一种可能的实现方式中,上述数据信道的发射功率满足如下公式:In a possible implementation, the transmission power of the above data channel satisfies the following formula:
P1=min{PCMAX,f1(M1)+PO+α×PL+β}P 1 =min{P CMAX ,f 1 (M 1 )+P O +α×PL+β}
其中,上述P1为上述数据信道的发射功率,上述PCMAX为上述最大发射功率,上述f1(M1)为上述数据信道的带宽M1的函数,上述PO为上述第二终端设备的目标接收功率,上述PL为路径损耗估计值,上述β为上述第一调整参数。Among them, the above P1 is the transmission power of the above data channel, the above PCMAX is the above maximum transmission power, the above f1 ( M1 ) is a function of the bandwidth M1 of the above data channel, the above PO is the target receiving power of the above second terminal device, the above PL is the path loss estimation value, and the above β is the above first adjustment parameter.
在一种可能的实现方式中,上述数据信道的发射功率满足如下公式:In a possible implementation, the transmission power of the above data channel satisfies the following formula:
P1=f2(M1+M2)+min{PCMAX,f3(M1+M2)+PO+α×PL+β}P 1 =f 2 (M 1 +M 2 )+min{P CMAX ,f 3 (M 1 +M 2 )+P O +α×PL+β}
其中,上述P1为上述数据信道的发射功率,上述PCMAX为上述最大发射功率,上述f2(M1+M2)和上述f3(M1+M2)分别为上述数据信道的带宽M1和上述控制信道的带宽M2的函数,上述PO为上述第二终端设备的目标接收功率,上述PL为路径损耗估计值,上述β为上述第一调整参数。Among them, the above-mentioned P1 is the transmission power of the above-mentioned data channel, the above-mentioned PCMAX is the above-mentioned maximum transmission power, the above-mentioned f2 ( M1 + M2 ) and the above-mentioned f3 ( M1 + M2 ) are functions of the bandwidth M1 of the above-mentioned data channel and the bandwidth M2 of the above-mentioned control channel respectively, the above-mentioned PO is the target receiving power of the above-mentioned second terminal device, the above-mentioned PL is the path loss estimation value, and the above-mentioned β is the above-mentioned first adjustment parameter.
在一种可能的实现方式中,上述数据信道的发射功率满足如下公式:In a possible implementation, the transmission power of the above data channel satisfies the following formula:
P1=min{PCMAX-f4(M1+M2),f3(M1+M2)+PO+α×PL+β}P 1 =min{P CMAX -f 4 (M 1 +M 2 ),f 3 (M 1 +M 2 )+P O +α×PL+β}
其中,上述P1为上述数据信道的发射功率,上述PCMAX为上述最大发射功率,上述f3(M1+M2)和上述f4(M1+M2)分别为上述数据信道的带宽M1和上述控制信道的带宽M2的函数,上述PO为上述第二终端设备的目标接收功率,上述PL为路径损耗估计值,上述β为上述第一调整参数。Among them, the above-mentioned P1 is the transmission power of the above-mentioned data channel, the above-mentioned PCMAX is the above-mentioned maximum transmission power, the above-mentioned f3 ( M1 + M2 ) and the above-mentioned f4 ( M1 + M2 ) are functions of the bandwidth M1 of the above-mentioned data channel and the bandwidth M2 of the above-mentioned control channel respectively, the above-mentioned PO is the target receiving power of the above-mentioned second terminal device, the above-mentioned PL is the path loss estimation value, and the above-mentioned β is the above-mentioned first adjustment parameter.
需要理解的是,当上述功率控制装置是终端设备或终端设备中实现上述功能的部件时,处理单元1001可以是一个或多个处理器,发送单元1002可以是发送器。当上述功率控制装置是芯片时,处理单元1001可以是一个或多个处理器,发送单元1002可以是输出接口。在一种可能的实现方式中,上述功率控制装置还可能包括接收单元,在功率控制装置为终端设备或终端设备中实现上述功能的部件时,接收单元(图中未示出)可以是接收器,或者发送单元1002和接收单元集成于一个器件,例如收发器。在功率控制装置为芯片时,接收单元可以是输入接口,或者发送单元1002和接收单元集成于一个单元,例如输入输出接口。It should be understood that when the above-mentioned power control device is a terminal device or a component in a terminal device that implements the above-mentioned functions, the
在本申请的一些实施例中,图10所示的功率控制装置还可用于执行以下操作:In some embodiments of the present application, the power control device shown in FIG. 10 may also be used to perform the following operations:
处理单元1001,用于确定反馈信道的发射功率;其中,上述反馈信道与数据信道既有时域重叠,又有频域重叠,或者,上述反馈信道与上述数据信道有频域重叠且无时域重叠,或者,上述反馈信道与上述数据信道有时域重叠且无频域重叠;The
发送单元1002,用于以上述反馈信道的发射功率向第二终端设备发送反馈信息。The sending
本申请实施例中,反馈信道与数据信道之间的复用方式可以包括多种可能(即不同的帧结构),如反馈信道可能与数据信道既有时域重叠又有频域重叠,又如反馈信道可能与数据信道有频域重叠但无时域重叠,又如反馈信道可能与数据信道有时域重叠但无频域重叠,其中,不同的复用方式对应不同的发射功率,因此终端设备可根据多种可能中的一种可能来确定反馈信道的发射功率,避免了在所有的情况下,都采用一种方式来确定反馈信道的发射功率,从而有效提高了反馈信道发射功率确定的准确度,合理地对反馈信道发射功率进行控制。In an embodiment of the present application, the multiplexing method between the feedback channel and the data channel may include multiple possibilities (i.e., different frame structures), such as the feedback channel may have both time domain overlap and frequency domain overlap with the data channel, the feedback channel may have frequency domain overlap but no time domain overlap with the data channel, and the feedback channel may have time domain overlap but no frequency domain overlap with the data channel. Different multiplexing methods correspond to different transmit powers, so the terminal device can determine the transmit power of the feedback channel according to one of the multiple possibilities, avoiding the use of one method to determine the transmit power of the feedback channel in all cases, thereby effectively improving the accuracy of determining the transmit power of the feedback channel and reasonably controlling the transmit power of the feedback channel.
在一种可能的实现方式中,上述反馈信道的发射功率根据最大发送功率、上述反馈信道的带宽、上述数据信道的带宽、上述反馈信道与上述数据信道的功率差值以及第二调整参数确定;In a possible implementation manner, the transmit power of the feedback channel is determined according to the maximum transmit power, the bandwidth of the feedback channel, the bandwidth of the data channel, the power difference between the feedback channel and the data channel, and the second adjustment parameter;
或者,上述反馈信道的发射功率根据上述最大发射功率、上述反馈信道的带宽、控制信道的带宽、上述反馈信道与上述控制信道的功率差值以及第二调整参数确定。Alternatively, the transmit power of the feedback channel is determined according to the maximum transmit power, the bandwidth of the feedback channel, the bandwidth of the control channel, the power difference between the feedback channel and the control channel, and the second adjustment parameter.
在一种可能的实现方式中,上述第二调整参数由高层信令配置,或者,上述第二调整参数为预定义的。In a possible implementation manner, the second adjustment parameter is configured by high-layer signaling, or the second adjustment parameter is predefined.
在一种可能的实现方式中,上述第二调整参数与上述反馈信息的比特数以及上述反馈信道的资源元素RE数量相关。In a possible implementation manner, the second adjustment parameter is related to the number of bits of the feedback information and the number of resource elements RE of the feedback channel.
在一种可能的实现方式中,上述反馈信道与上述数据信道的功率差值为预定义的,或者,上述反馈信道与上述数据信道的功率差值由控制信息指示;或者,上述反馈信道与上述数据信道的功率差值由高层信令配置;In a possible implementation manner, the power difference between the feedback channel and the data channel is predefined, or the power difference between the feedback channel and the data channel is indicated by control information; or the power difference between the feedback channel and the data channel is configured by high-layer signaling;
上述反馈信道与上述控制信道的功率差值为预定义的,或者,上述反馈信道与上述控制信道的功率差值由上述控制信息指示;或者,上述反馈信道与上述控制信道的功率差值由上述高层信令配置。The power difference between the feedback channel and the control channel is predefined, or the power difference between the feedback channel and the control channel is indicated by the control information; or the power difference between the feedback channel and the control channel is configured by the high-level signaling.
在一种可能的实现方式中,上述反馈信息中包括混合自动重传请求HARQ信息,或者,上述反馈信息中包括参考信息,或者,上述反馈信息中包括上述HARQ信息和上述参考信息;其中,上述参考信息包括上述第一终端设备与上述第二终端设备之间的信息,和/或,上述第一终端设备与网络设备之间的信息。In a possible implementation, the feedback information includes hybrid automatic repeat request HARQ information, or the feedback information includes reference information, or the feedback information includes the HARQ information and the reference information; wherein the reference information includes information between the first terminal device and the second terminal device, and/or information between the first terminal device and the network device.
在一种可能的实现方式中,上述参考信息包括上述第一终端设备与上述第二终端设备之间的参考状态信息、参考信号接收功率、参考信号接收质量和上述第一终端设备与上述第二终端设备之间的路径损耗信息中的一项或多项。In a possible implementation, the reference information includes one or more of reference state information between the first terminal device and the second terminal device, reference signal reception power, reference signal reception quality, and path loss information between the first terminal device and the second terminal device.
在一种可能的实现方式中,上述反馈信道的发射功率满足如下公式:In a possible implementation, the transmission power of the feedback channel satisfies the following formula:
P2=f5(M1+M3)+min{PCMAX,f6(M1+M3)+PO+α×PL+Δ}P 2 =f 5 (M 1 +M 3 )+min{P CMAX ,f 6 (M 1 +M 3 )+P O +α×PL+Δ}
其中,上述P2为上述反馈信道的发射功率,上述PCMAX为上述最大发射功率,上述f5(M1+M3)和上述f6(M1+M3)分别为上述数据信道的带宽M1、上述反馈信道的带宽M3以及上述反馈信道与上述数据信道的功率差值的函数,上述PO为上述第二终端设备的目标接收功率,上述PL为路径损耗估计值,上述Δ为上述第二调整参数。Among them, the above-mentioned P2 is the transmission power of the above-mentioned feedback channel, the above-mentioned PCMAX is the above-mentioned maximum transmission power, the above-mentioned f5 ( M1 + M3 ) and the above-mentioned f6 ( M1 + M3 ) are respectively functions of the bandwidth M1 of the above-mentioned data channel, the bandwidth M3 of the above-mentioned feedback channel and the power difference between the above-mentioned feedback channel and the above-mentioned data channel, the above-mentioned PO is the target receiving power of the above-mentioned second terminal device, the above-mentioned PL is the path loss estimation value, and the above-mentioned Δ is the above-mentioned second adjustment parameter.
在一种可能的实现方式中,上述反馈信道的发射功率满足如下公式:In a possible implementation, the transmission power of the feedback channel satisfies the following formula:
P2=f7(M2+M3)+min{PCMAX,f8(M2+M3)+PO+α×PL+Δ}P 2 =f 7 (M 2 +M 3 )+min{P CMAX ,f 8 (M 2 +M 3 )+P O +α×PL+Δ}
其中,上述P2为上述反馈信道的发射功率,上述PCMAX为上述最大发射功率,上述f7(M2+M3)和上述f8(M2+M3)分别为上述控制信道的带宽M2、上述反馈信道的带宽M3以及上述反馈信道与上述控制信道的功率差值的函数,上述PO为上述第二终端设备的目标接收功率,上述PL为路径损耗估计值,上述Δ为上述第二调整参数。Among them, the above-mentioned P2 is the transmission power of the above-mentioned feedback channel, the above-mentioned PCMAX is the above-mentioned maximum transmission power, the above-mentioned f7 ( M2 + M3 ) and the above-mentioned f8 ( M2 + M3 ) are respectively functions of the bandwidth M2 of the above-mentioned control channel, the bandwidth M3 of the above-mentioned feedback channel and the power difference between the above-mentioned feedback channel and the above-mentioned control channel, the above-mentioned PO is the target receiving power of the above-mentioned second terminal device, the above-mentioned PL is the path loss estimation value, and the above-mentioned Δ is the above-mentioned second adjustment parameter.
可理解,图10所示的功率控制装置的具体实施方式可对应参考图5和图6所示的方法实施方式,以及图7至图9所示出的公式(7)至公式(33)的具体实施方式,这里不再一一详述。It can be understood that the specific implementation of the power control device shown in Figure 10 can correspond to the method implementation shown in reference Figures 5 and 6, as well as the specific implementations of formulas (7) to (33) shown in Figures 7 to 9, which will not be described in detail here.
参见图11,图11为本申请实施例提供的一种终端设备1100的结构示意图。该终端设备可执行如图5和6所示出的方法中的第一终端设备的操作,或者,该终端设备也可执行如图10所示的功率控制装置的操作。See Figure 11, which is a schematic diagram of the structure of a
为了便于说明,图11仅示出了终端设备的主要部件。如图11所示,终端设备1100包括处理器、存储器、射频链路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理,以及对整个终端设备进行控制,执行软件程序,处理软件程序的数据,例如用于支持终端设备执行图5和图6所描述的流程。存储器主要用于存储软件程序和数据。射频链路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。终端设备1100还可以包括输入输出装置,例如触摸屏、显示屏,键盘等主要用于接收用户输入的数据以及对用户输出数据。需要说明的是,有些种类的终端设备可以不具有输入输出装置。For ease of explanation, FIG11 only shows the main components of the terminal device. As shown in FIG11, the
当终端设备开机后,处理器可以读取存储单元中的软件程序,解释并执行软件程序的,处理软件程序的数据。当需要通过无线发送数据时,处理器对待发送的数据进行基带处理后,输出基带信号至射频链路,射频链路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时,射频链路通过天线接收到射频信号,将射频信号转换为基带信号,并将基带信号输出至处理器,处理器将基带信号转换为数据并对该数据进行处理。When the terminal device is turned on, the processor can read the software program in the storage unit, interpret and execute the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the RF link. The RF link performs RF processing on the baseband signal and then sends the RF signal outward in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the RF link receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data.
本领域技术人员可以理解,为了便于说明,图11仅示出了一个存储器和处理器。在实际的终端设备中,可以存在多个处理器和存储器。存储器也可以称为存储介质或者存储设备等,本申请实施例对此不做限制。Those skilled in the art will appreciate that, for ease of explanation, FIG. 11 shows only one memory and processor. In an actual terminal device, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiments of the present application.
作为一种可选的实现方式,处理器可以包括基带处理器和中央处理器(centralprocessing unit,CPU),基带处理器主要用于对通信协议以及通信数据进行处理,CPU主要用于对整个终端设备进行控制,执行软件程序,处理软件程序的数据。可选的,该处理器还可以是网络处理器(network processor,NP)或者CPU和NP的组合。处理器还可以进一步包括硬件芯片。上述硬件芯片可以是专用集成电路(application-specific integratedcircuit,ASIC),可编程逻辑器件(programmable logic device,PLD)或其组合。上述PLD可以是复杂可编程逻辑器件(complex programmable logic device,CPLD),现场可编程逻辑门阵列(field-programmable gate array,FPGA),通用阵列逻辑(generic array logic,GAL)或其任意组合。存储器可以包括易失性存储器(volatile memory),例如随机存取存储器(random-access memory,RAM);存储器也可以包括非易失性存储器(non-volatilememory),例如快闪存储器(flash memory),硬盘(hard disk drive,HDD)或固态硬盘(solid-state drive,SSD);存储器还可以包括上述种类的存储器的组合。As an optional implementation, the processor may include a baseband processor and a central processing unit (CPU), wherein the baseband processor is mainly used to process the communication protocol and communication data, and the CPU is mainly used to control the entire terminal device, execute the software program, and process the data of the software program. Optionally, the processor may also be a network processor (NP) or a combination of a CPU and an NP. The processor may further include a hardware chip. The above-mentioned hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof. The above-mentioned PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL) or any combination thereof. The memory may include volatile memory, such as random-access memory (RAM); the memory may also include non-volatile memory, such as flash memory, hard disk drive (HDD) or solid-state drive (SSD); the memory may also include a combination of the above types of memory.
示例性的,在申请实施例中,可以将具有收发功能的天线和射频链路视为终端设备1100的收发单元1101,将具有处理功能的处理器视为终端设备1100的处理单元1102。Exemplarily, in the application embodiment, the antenna and the radio frequency link with transceiver functions can be regarded as the
如图11所示,终端设备1100可以包括收发单元1101和处理单元1102。收发单元也可以称为收发器、收发机、收发装置等。可选的,可以将收发单元1101中用于实现接收功能的器件视为接收单元,将收发单元1101中用于实现发送功能的器件视为发送单元,即收发单元1101包括接收单元和发送单元。示例性的,接收单元也可以称为接收机、接收器、接收电路等,发送单元可以称为发射机、发射器或者发射电路等。As shown in FIG11 , the
在一些实施例中,收发单元1101、处理单元1102可能集成为一个器件,也可以分离为不同的器件,此外,处理器与存储器也可以集成为一个器件,或分立为不同器件。例如,在一个实施例中,收发单元1101可用于执行图5所示的步骤502所示的方法。又如,在一个实施例中,收发单元1101还可用于执行图6所示的步骤602所示的方法。In some embodiments, the
又如,在一个实施例中,处理单元1102可用于执行控制收发单元1101执行图5所示的步骤502所示的方法,以及该处理单元1102还可用于控制收发单元1101执行图6所示的步骤602所示的方法。For example, in one embodiment, the
又如,在一个实施例中,处理单元1102还可用于执行图5所示的步骤501所示的方法,以及图6所示的步骤601所示的方法。For another example, in one embodiment, the
又如,在一个实施例中,收发单元1101还可用于执行发送单元1002所示的方法。又如,在一个实施例中,处理单元1102还可用于执行处理单元1001所示的方法。For another example, in one embodiment, the
可理解的是,本申请实施例中的终端设备的实现方式,具体可参考前述各个实施例,这里不再详述。It is understandable that the implementation method of the terminal device in the embodiments of the present application can be specifically referred to the aforementioned embodiments and will not be described in detail here.
本申请实施例还提供了一种计算机可读存储介质。上述方法实施例中的全部或者部分流程可以由计算机程序来指令相关的硬件完成,该程序可存储于上述计算机存储介质中,该程序在执行时,可包括如上述各方法实施例的流程。计算机可读存储介质可以是前述任一实施例的功率控制装置(包括数据发送端和/或数据接收端)的内部存储单元,例如功率控制装置的硬盘或内存。上述计算机可读存储介质也可以是上述功率控制装置的外部存储设备,例如上述功率控制装置上配备的插接式硬盘,智能存储卡(smart media card,SMC),安全数字(secure digital,SD)卡,闪存卡(flash card)等。进一步地,上述计算机可读存储介质还可以既包括上述功率控制装置的内部存储单元也包括外部存储设备。上述计算机可读存储介质用于存储上述计算机程序以及上述功率控制装置所需的其他程序和数据。上述计算机可读存储介质还可以用于暂时地存储已经输出或者将要输出的数据。The embodiment of the present application also provides a computer-readable storage medium. All or part of the processes in the above method embodiments can be completed by a computer program to instruct the relevant hardware, and the program can be stored in the above computer storage medium. When the program is executed, it can include the processes of the above method embodiments. The computer-readable storage medium can be an internal storage unit of the power control device (including the data sending end and/or the data receiving end) of any of the above embodiments, such as a hard disk or memory of the power control device. The above computer-readable storage medium can also be an external storage device of the above power control device, such as a plug-in hard disk equipped on the above power control device, a smart memory card (smart media card, SMC), a secure digital (secure digital, SD) card, a flash card (flash card), etc. Further, the above computer-readable storage medium can also include both the internal storage unit of the above power control device and an external storage device. The above computer-readable storage medium is used to store the above computer program and other programs and data required by the above power control device. The above computer-readable storage medium can also be used to temporarily store data that has been output or is to be output.
在上述实施例中,可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时,可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时,全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中,或者通过所述计算机可读存储介质进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质,(例如,软盘、硬盘、磁带)、光介质(例如,DVD)、或者半导体介质(例如,固态硬盘(solid state disk,SSD))等。In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted through the computer-readable storage medium. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or a data center that includes one or more available media integrations. The available medium may be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state disk (SSD)), etc.
本申请实施例方法中的步骤可以根据实际需要进行顺序调整、合并和删减。The steps in the method of the embodiment of the present application can be adjusted in order, combined and deleted according to actual needs.
本申请实施例装置中的模块可以根据实际需要进行合并、划分和删减。The modules in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.
以上所述,以上实施例仅用以说明本申请的技术方案,而非对其限制;尽管参照前述实施例对本申请进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims (23)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910101907.XA CN111511025B (en) | 2019-01-31 | 2019-01-31 | Power control method and terminal equipment |
PCT/CN2020/072548 WO2020156214A1 (en) | 2019-01-31 | 2020-01-16 | Power control method and terminal device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910101907.XA CN111511025B (en) | 2019-01-31 | 2019-01-31 | Power control method and terminal equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
CN111511025A CN111511025A (en) | 2020-08-07 |
CN111511025B true CN111511025B (en) | 2023-05-23 |
Family
ID=71839947
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910101907.XA Active CN111511025B (en) | 2019-01-31 | 2019-01-31 | Power control method and terminal equipment |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN111511025B (en) |
WO (1) | WO2020156214A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117641619A (en) * | 2022-08-17 | 2024-03-01 | 中兴通讯股份有限公司 | Direct communication method and device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108174438A (en) * | 2016-12-07 | 2018-06-15 | 普天信息技术有限公司 | A P-UE signal transmission method |
CN109075908A (en) * | 2018-08-10 | 2018-12-21 | 北京小米移动软件有限公司 | Feedback information transmission method, apparatus and system between car networking equipment |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101457322B1 (en) * | 2008-12-26 | 2014-11-04 | 후지쯔 가부시끼가이샤 | Radio communication system |
EP3402255B1 (en) * | 2016-02-02 | 2021-03-31 | Huawei Technologies Co., Ltd. | Emission power verification method, user equipment, and base station |
CN107689841A (en) * | 2016-08-03 | 2018-02-13 | 中兴通讯股份有限公司 | Data transmission method and device |
CN114710243B (en) * | 2017-08-11 | 2025-02-14 | 中兴通讯股份有限公司 | Reference signal information configuration method and device |
-
2019
- 2019-01-31 CN CN201910101907.XA patent/CN111511025B/en active Active
-
2020
- 2020-01-16 WO PCT/CN2020/072548 patent/WO2020156214A1/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108174438A (en) * | 2016-12-07 | 2018-06-15 | 普天信息技术有限公司 | A P-UE signal transmission method |
CN109075908A (en) * | 2018-08-10 | 2018-12-21 | 北京小米移动软件有限公司 | Feedback information transmission method, apparatus and system between car networking equipment |
Non-Patent Citations (2)
Title |
---|
"Discussion of sidelink unicast,groupcast and broadcast for NR-V2X";OPPO;《3GPP TSG RAN WG1 Meeting #94bis R1-1810984》;20181012;第2.1节 * |
"Sidelink physical layer structure for NR V2X";Huawei,HiSilicon;《3GPP TSG RAN WG1 Meeting #95 R1-1812206》;20181116;全文 * |
Also Published As
Publication number | Publication date |
---|---|
WO2020156214A1 (en) | 2020-08-06 |
CN111511025A (en) | 2020-08-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN114845370B (en) | Power control method and power control device | |
CN112806076B (en) | Method and apparatus for configuring sidelink channel resource units | |
CN114271000A (en) | Method for configuring side link resource in communication system | |
CN111586827B (en) | Power control method and power control device | |
JP7532643B2 (en) | Long Physical Sidelink Feedback Channel (PSFCH) Format for Extended PSFCH Range | |
JP7419553B2 (en) | Feedback resource determination method and feedback resource determination device | |
CN115315978A (en) | Method and apparatus for performing congestion control in NR V2X | |
WO2023011218A1 (en) | Resource sharing method and communications apparatus | |
WO2021031090A1 (en) | Sidelink communication method and device | |
CN115699648A (en) | Method and apparatus for performing mode 1 SL communication in NR V2X | |
KR102535608B1 (en) | Power control method and device | |
CN112152761B (en) | Communication method, device and storage medium | |
CN114145059B (en) | Resource selection method and device | |
CN111511025B (en) | Power control method and terminal equipment | |
CN112399564B (en) | Side-link communication method and device | |
CN116458236B (en) | Method and apparatus for repeating transmission of data channels | |
WO2024169587A1 (en) | Beam training method and apparatus, system, and storage medium | |
US20230224908A1 (en) | Method for repeatedly transmitting control channel, terminal device, and network device | |
WO2024093650A1 (en) | Resource indication method and apparatus | |
WO2022024427A1 (en) | Terminal and communication method | |
WO2025066780A1 (en) | Communication method and apparatus | |
CN119968869A (en) | Method and apparatus for performing side link communication discovery in a wireless communication system | |
CN119906967A (en) | A communication method and device | |
CN118947093A (en) | Wireless communication method and terminal equipment | |
WO2024067092A1 (en) | Communication method and apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |